JP5216838B2 - Wireless communication apparatus, control program, and wireless communication system - Google Patents

Description

  Embodiments of the present invention include a wireless communication device that wirelessly communicates with a wireless tag and performs various types of information processing using information obtained from the wireless tag through the wireless communication, a control program thereof, and wireless communication including the wireless communication device About the system.

  In recent years, C1Gen2 (Class 1 Generation 2) type wireless tags (also referred to as RFID (Radio Frequency Identification) tags) that satisfy the regulations proposed by EPC (Electronic Product Code) Global, which is an RFID tag standardization organization, are becoming widespread. . The C1Gen2 type RFID tag stores four banks, that is, a “USER” area for storing user data, a “TID” area for storing tag ID, an “EPC” area for storing EPC, and an access password and a kill password. It has a “RESERVED” area.

  The data in the EPC area plays an important role in wireless communication systems in various fields. For example, in a system in which an RFID tag is embedded in an ID card and used for personal identification, data read from the EPC area of the RFID tag embedded in the ID card is used for building entry / exit management or user management of a specific device. It is used.

  Further, in a system that manages an RFID tag attached to a product at a retail store or the like, data read from the EPC area of the RFID tag attached to the product is used for sales registration. Further, there is a system that issues a coupon in which an RFID tag is embedded, and discounts the price of a product registered for sales using data read from the EPC area of the RFID tag embedded in the coupon.

Utility Model Registration No. 3075440

  Although the C1Gen2 type RFID tag has a read lock function and a write lock function, only the write lock can be applied to the EPC area. Therefore, rewriting of data in the EPC area can be prohibited, but by reading the data read from the EPC area by the RFID reader / writer into the EPC area of another RFID tag, it is possible to easily duplicate the RFID tag having the same data in the EPC area. End up.

  As described above, when an RFID tag having the same data in the EPC area is duplicated, various frauds may occur in the system that uses the RFID tag for personal identification, merchandise management, and coupons as described above. Such a problem may occur not only in the C1Gen2 type RFID tag but also in other types of RDID tags.

  Under the circumstances as described above, it is necessary to take measures for preventing the use of a counterfeited RFID tag in various wireless communication systems using the RFID tag.

In order to achieve the above object, a wireless communication apparatus according to an embodiment includes wireless communication means, storage means, first control means, second control means, and processing means.
The wireless communication means wirelessly communicates with a wireless tag having a first memory area storing code information and a second memory area readable when a preset access password is designated. The storage means stores an access password designated in advance. The first control means reads a tag code stored in a first memory area of a predetermined wireless tag by wireless communication of the wireless communication means. The second control means attempts to read the second memory area of the predetermined wireless tag without specifying an access password by wireless communication of the wireless communication means. If the second control means cannot read the access password stored in the storage means. Designate and attempt to read the second memory area of the wireless tag. The processing means is read from the wireless tag by the first control means when the second memory area of the predetermined wireless tag is read by designating the access password stored in the storage means by the second control means. A predetermined process is executed using the code information.

The figure which shows the structure of the POS system in one Embodiment. The schematic diagram which shows an example of the discount tag in the embodiment. The figure which shows the memory structure of the discount tag in the embodiment. The block diagram which shows the principal part structure of the POS terminal in the same embodiment. The block diagram which shows the principal part structure of the tag issuing apparatus in the same embodiment. The flowchart of the issuing process in the same embodiment. The flowchart of the accounting process in the embodiment. The flowchart of the discount process in the embodiment. The schematic diagram which shows an example of the discount tag in 2nd Embodiment. The schematic diagram which shows the structure of the tag authentication table in the embodiment. The flowchart of the issuing process in the same embodiment. The flowchart of the accounting process in the embodiment. The flowchart of the value discount process in the embodiment.

Each embodiment will be described below with reference to the drawings.
In each embodiment, as an example of a system using an RFID tag, a POS (Point Of Sales) system operating in a retail store such as a supermarket is exemplified, and a discount tag that is an RFID tag used in this system And a preferred embodiment for preventing forgery of discount tags.

(First embodiment)
In the first embodiment, a case will be described in which a discount tag that discounts a predetermined amount from the total price of a customer's purchased products is used.

[System configuration]
The configuration of the POS system in this embodiment is shown in FIG. This system includes a POS terminal 1 and a tag issuing device 2 arranged at a store accounting, and these are connected so as to be able to communicate with each other by wire or wirelessly. However, the number of POS terminals 1 and tag issuing devices 2 is not limited to one, and the POS system may be constructed by a plurality of POS terminals 1 and tag issuing devices 2.

The POS terminal 1 functions as a wireless communication apparatus in the present embodiment, and is used for accounting for products that a customer intends to purchase.
The tag issuing device 2 functions as tag issuing means in this embodiment, and issues a discount tag 3. The tag issuing device 2 may be, for example, a handy terminal operated by a store clerk by hand, or may be fixedly installed at a predetermined position in the store.

  FIG. 2 is a schematic diagram illustrating an example of the discount tag 3. The discount tag 3 is configured by embedding an RFID inlet including an IC 31 and an antenna 32 in a tag base 30 formed of a paper material, a resin material, or the like. The surface of the tag base 30 is a printing surface, and characters such as “50 yen discount” are printed as illustrated. Moreover, the adhesive layer is formed in the back surface of the tag base material 30, and the discount tag 3 can be affixed on goods or its packaging with this adhesive layer.

  The discount tag 3 is a C1Gen2 type RFID tag. As shown in FIG. 3, the IC 31 has four banks: a user area “USER”, a tag ID area “TID”, an EPC area “EPC”, and a reserved area “RESERVED”. It has the memory which consists of. Arbitrary user data is stored in the user area. In the tag ID area, unique identification information that does not overlap with other RFID tags is stored in the tag manufacturing stage. In the EPC area, EPC “urn: epc: tag: gid-96: 0.X.Y” is stored as code information indicating the discount tag 3. Here, “X” is an identifier indicating whether discount / discount, and either “0” indicating discount or “1” indicating discount is described. In “Y”, a discount amount or a numerical value indicating a discount rate is described. Since discounts are targeted in this embodiment, “X” is “0” and “Y” indicates a discount amount. An arbitrary access password is stored in the reserved area. Of each area, the user area and the reserved area can be read-locked (read restriction) and write-locked (write restriction) using the access password stored in the reserved area, and the EPC area can be read using the access password. Light lock is possible. The tag ID area is write-locked when the RFID inlet is manufactured. The EPC area functions as a first memory area in the present embodiment, the reserved area functions as a second memory area in the present embodiment, and the user area functions as a third memory area in the present embodiment.

  A product tag 4 of a C1Gen2 type having an RFID inlet in which an EPC including a product code of the product is stored in an EPC area is attached to the product sold at the store. The information stored in the discount tag 3 and the product tag 4 is read by the POS terminal 1 at the time of accounting for the product and used for calculating the price.

[POS terminal]
FIG. 4 is a block diagram showing a main configuration of the POS terminal 1. The POS terminal 1 is a computer type including a CPU (Central Processing Unit) 10, a memory 11, a communication I / F (Interface) 12, a barcode scanner 13, an operation unit 14, a display 15, a receipt printer 16, and an RFID reader 17. Information processing apparatus. The memory 11, the communication I / F 12, the barcode scanner 13, the operation unit 14, the display 15, the receipt printer 16, and the RFID reader 17 are connected to the CPU 10 via a bus line 18 including an address bus, a data bus, and the like. ing.

The memory 11 functions as a storage unit in the present embodiment, and includes a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The memory 11 stores control programs for various operations executed by the CPU 10 and processing. Various working memory areas are formed according to the scene.
The communication I / F 12 controls data communication with the tag issuing device 2.
The barcode scanner 13 optically reads and decodes a barcode attached to a product or the like, and generates code information such as a product code indicated by the barcode.
The operation unit 14 includes a keyboard having various operation keys, a touch panel provided on the display surface of the display 15, and the like.
The display 15 is an LCD (Liquid Crystal Display), for example, and selectively displays information processed by the POS terminal 1.
The receipt printer 16 prints and issues on the receipt paper the name, price, total price, deposit amount, change amount, etc. of the products sold at the POS terminal 1.

  The RFID reader 17 functions as wireless communication means in the present embodiment, and includes an antenna that wirelessly communicates with the discount tag 3 and the product tag 4 via radio waves, and a control unit that controls communication timing by the antenna. Have. The antenna is provided, for example, at a checkout counter in an accounting office, and its communication range is adjusted to be limited to a predetermined position on the checkout counter.

[Tag issuing device]
FIG. 5 is a block diagram showing a main configuration of the tag issuing device 2. The tag issuing device 2 is a computer-type information processing device including a CPU 20, a memory 21, a communication I / F 22, a printer 23, an operation unit 24, a display 25, and an RFID reader / writer 26. The memory 21, the communication I / F 22, the printer 23, the operation unit 24, the display 25, and the RFID reader / writer 26 are connected to the CPU 20 via a bus line 27 configured by an address bus, a data bus, and the like.

The memory 21 is configured by a ROM, a RAM, and the like, stores control programs for various operations executed by the CPU 20, and forms various working memory areas according to processing scenes.
The communication I / F 22 controls data communication with the POS terminal 1.
The operation unit 24 includes a keyboard having various operation keys, a touch panel provided on the display surface of the display 25, and the like.
The display 25 is, for example, an LCD, and selectively displays information processed by the tag issuing device 2.
In the tag issuing device 2, a plurality of C1Gen2 type RFID tags in which no information is written in the user area, the EPC area, and the reserved area, and characters or the like are not printed on the printing surface are affixed to the mount. It is set in the state. The printer 23 and the RFID reader / writer 26 function as means for issuing the RFID tag as a discount tag 3. That is, the RFID reader / writer 26 writes predetermined information in the user area, EPC area, and reserved area of the RFID tag, and the printer 23 sets the value on the printed surface of the RFID tag after the information is written by the RFID reader / writer 26. Print the discount. The RFID tag after the discount amount is printed in this way is issued from the issue port of the tag issuing device 2 as the discount tag 3.

[Issue processing]
The issuing process of the discount tag 3 by the tag issuing device 2 will be described in detail. When there is a product to be sold at a discounted price, such as a side dish with a near expiration date, the store clerk operates the operation unit 24 of the tag issuing device 2 to instruct the issue of the discount tag 3. At this time, the CPU 20 of the tag issuing device 2 executes a control program for issuing processing stored in the memory 21 and operates according to the flowchart of FIG.

  That is, first, the CPU 20 determines whether or not the discount tag 3 issued in the process is the discount tag 3 issued first today (step S101). This determination is performed by, for example, providing a flag in the memory 21 that is turned on when the discount tag 3 is issued and turned off at the end of the day's business, and referring to this flag.

  When the discount tag 3 is issued for the first time today (Yes in step S101), the CPU 20 generates an arbitrary access password by using a random number (step S102). The generated access password is registered in the POS terminal 1 as a discount authentication code (step S103). Specifically, the generated access password and a command for instructing registration of the password are transmitted to the POS terminal 1 via the communication I / F 22. When the POS terminal 1 receives the access password and the command from the tag issuing device 2 via the communication I / F 12, the POS terminal 1 stores the received password in the memory 11 as a discount authentication code for today.

  After the process of step S103, or when it is determined in the process of step S101 that the discount tag 3 is not issued first today (No in step S101), the CPU 20 accepts an input of the discount amount (step S104). ). In this process, for example, an input of a discount amount may be received by the operation unit 24, or an input of a discount amount may be received by data communication with the POS terminal 1.

  When the discount amount is input, the CPU 20 encodes the EPC using the input discount amount (step S105). As a result, for example, if 50 yen is input as a discount amount, an EPC “urn: epc: tag: gid-96: 0.0.50” is generated. The CPU 20 controls the RFID reader / writer 26 to write the generated EPC into the EPC area of the RFID tag set in the tag issuing device 2 (step S106), and the access password generated in the process of step S102 is the same RFID. Write in the reserved area of the tag (step S107). Then, the EPC area is write-locked, and the reserved area is read / write-locked (step S108). Thereafter, the CPU 20 controls the printer 23 to print a discount amount, for example, “50 yen discount” on the printing surface of the RFID tag (step S109).

Thus, the RFID tag in which the EPC and the access password are written and the discount amount is printed is issued as the discount tag 3 from the issue port of the tag issuing device 2, and the series of processes is completed. The store clerk affixes the discount tag 3 issued from the tag issuing device 2 to the product to be discounted.
In the present embodiment, the discount tag 3 issued in the issue process can be used only on the issue date.

[Accounting]
Next, the accounting process executed by the POS terminal 1 will be described. When the customer pays for the goods to be purchased, he / she moves to the accounting office with the goods and places them on the cashier counter.

On the other hand, the store clerk operates the operation unit 14 of the POS terminal 1 to declare the start of the accounting process. At this time, the CPU 10 of the POS terminal 1 executes a control program for accounting processing stored in the memory 11 and operates according to the flowchart of FIG.
That is, the CPU 20 first controls the RFID reader 17 to try to read the RFID tag on the checkout counter, that is, the EPC stored in the EPC area of the product tag 4 or the discount tag 3 and the tag ID stored in the TID area. (No in steps S201 and S202: first control means). At this time, if the RFID reader 17 receives the EPC and the tag ID returned from the RFID tag (Yes in step S202), the CPU 10 determines that the responding RFID tag is used for the current accounting process based on the received tag ID. It is then determined whether or not it has been read (step S203). If the same tag ID as the received tag ID has already been received in this accounting process, it is determined that the responding RFID tag has been read (Yes in step S203), and the received EPC is discarded. Then, the process returns to step S201.

  On the other hand, if the same tag ID as the received tag ID has not been received in the current accounting process, it is determined that the responding RFID tag has not been read (No in step S203), and the CPU 10 performs the reception. The type of the RFID tag that has responded is determined based on the EPC (step S204). When the EPC indicates a product, the CPU 10 determines that the responding RFID tag is the product tag 4 (“product tag” in step S204), and executes product registration processing (step S205). Specifically, the product information (product name, price, etc.) of the product indicated by the product code in the EPC is specified with reference to the product master stored in advance in the memory 11, and the transaction formed in the memory 11 is specified. Register in the registration area for processing. If there is a product to which the product tag 4 is not attached, the product information of the product may be input by the barcode scanner 13 or the operation unit 14.

  On the other hand, if the EPC indicates a discount in the process of step S204, the CPU 10 determines that the responding RFID tag is the discount tag 3 (“discount tag” in step S204), and executes the discount process ( Step S206). In the discount process, discount information indicating the discount amount or the like is registered in the registration area of the memory 11 only when the discount tag 3 is usable. Details of the discount process will be described later with reference to FIG.

  After the product registration process or the discount process, the CPU 10 determines whether or not an instruction to end reading of the RFID tag is given (step S207). If the end of reading has not been instructed yet (No in step S207), the CPU 10 returns to the process in step S201 and tries to read the RFID tag again. When the reading of all the RFID tags on the register counter is completed, the store clerk operates the operation unit 14 to instruct the end of reading. When this instruction is made (Yes in step S207), the CPU 10 calculates the total price of each product based on the product information and discount information registered in the registration area of the memory 11 and displays the total price on the display 25 ( Step S208). Further, payment of money by cash, credit card, electronic money or the like is accepted (step S209), and the receipt printer 16 is controlled to issue a receipt for the transaction (step S210). Thus, a series of processing is completed.

[Discount processing]
Next, the discount process will be described. In the discount process, the CPU 10 of the POS terminal 1 operates according to the flowchart of FIG. That is, first, the CPU 10 determines whether or not today's discount authentication code is registered in the memory 11 (step S301). If registered (Yes in step S301), the RFID reader 17 is controlled to attempt to read the reserved area of the RFID tag from which EPC or the like has been read in the immediately preceding step S201 (step S302). At this time, the access password is not specified.

  Thereafter, the CPU 10 determines whether or not the reserved area has been read successfully (step S303). If the access password has not been read from the reserved area (No in step S303), the CPU 10 controls the RFID reader 17 to designate the today's discount authentication code registered in the memory 11 as the access password, and again the same RFID An attempt is made to read the reserved area of the tag (step S304). Here, the processing of steps S302 to S304 constitutes the second control means in the present embodiment.

  Thereafter, the CPU 10 determines whether or not the reserved area is read successfully (step S305). If the access password has been read from the reserved area (Yes in step S305), the RFID tag is the discount tag 3 issued on the day, so the CPU 10 removes the discount tag 3 from the discount tag 3 in the immediately preceding step S201. The discount information such as the discount amount indicated by the read EPC is registered in the registration area for the accounting process formed in the memory 11 (step S306: processing means), and the series of processing ends. In the process of step S208, the discount amount indicated by the discount information registered in the registration area of the memory 11 in this way is subtracted from the total price indicated by each product information, and the total price is calculated. .

  Here, if today's discount authentication code is not registered in the memory 11 in the process of step S301 (Yes in step S301), at least the RFID tag is not the discount tag 3 issued today. In this case, the RFID tag cannot be used for discounting due to the conditions for using the discount tag 3 described above. Therefore, the CPU 10 notifies the fact that the RFID tag cannot be used for discounting by displaying a warning message on the display 15 (step S307: notification means). Thereafter, the discount process is terminated without registering the discount information in the registration area of the memory 11, and the process proceeds to step S207.

  If the access password is read from the reserved area in the process of step S302 (Yes in step S303), the reserved area of the RFID tag is not read-locked. That is, the RFID tag is likely to be a forged tag, not the discount tag 3 issued in the issuing process of the tag issuing device 2. Therefore, the CPU 10 notifies the fact that the RFID tag cannot be used for discounting by displaying a warning message on the display 15 (step S307: notification means). Thereafter, the discount process is terminated without registering the discount information in the registration area of the memory 11, and the process proceeds to step S207.

  If the access password cannot be read from the reserved area in the process of step S304 (No in step S305), the access password stored in the reserved area does not match the today's discount authentication code. That is, even if the RFID tag is the discount tag 3, it is not issued today, or there is a possibility that it is a counterfeit tag. Therefore, the CPU 10 notifies the fact that the RFID tag cannot be used for discounting by displaying a warning message on the display 15 (step S307: notification means). Thereafter, the discount process is terminated without registering the discount information in the registration area of the memory 11, and the process proceeds to step S207.

  As described above, in the present embodiment, when performing discounting with an RFID tag, first, reading of the reserved area of the RFID tag without specifying an access password is attempted, and if the access password cannot be read, the discount authentication code Is designated as an access password, and reading of the reserved area of the RFID tag is attempted, and if the reserved area can be read by this, the RFID tag is assumed to be a usable discount tag 3 from the EPC area. The price is reduced using the read EPC. By doing so, even if the discount tag 3 is forged by writing an EPC indicating a discount in the EPC area of a predetermined RFID tag, the use of the forged RFID tag can be surely prevented. .

  Moreover, since a general C1Gen2 type RFID tag can be used as the discount tag 3, the POS system can be easily introduced.

(Second Embodiment)
Next, a second embodiment will be described.
In the present embodiment, a discount tag 5 that discounts the price in addition to the discount tag 3 is introduced, and the discount target by the discount tag 3 and the discount tag 5 is limited to a specific product. Different from form. The same components as those in the first embodiment are denoted by the same reference numerals, and redundant description will be given only when necessary.

  FIG. 9 is a schematic diagram illustrating an example of the discount tag 5. This discount tag 5 is configured by embedding an RFID inlet composed of an IC 31 and an antenna 32 in a tag base 30 formed of a paper material, a resin material, or the like, similar to the discount tag 3 shown in FIG. . The surface of the tag base 30 is a printing surface, and characters such as “50% discount” are printed as illustrated. This discount tag 5 is also a C1Gen2 type RFID tag issued from the tag issuing device 2, and the IC 31 has a memory composed of four banks shown in FIG. In the EPC area, “urn: epc: tag: gid-96: 0.X.Y” is stored as an EPC, and “X” becomes “1” and “Y” becomes a discount rate because discounts are targeted. .

  In the present embodiment, the tag authentication table 110 shown in FIG. 10 is stored in the memory 11 of the POS terminal 1. The tag authentication table 110 includes a record in which the EPC written in the EPC area of the discount tag 3 and the discount tag 5 issued by the tag issuing device 2 is associated with the access password written in the reserved area. ing. In the present embodiment, the discount tag 3 and the discount tag 5 issued in the issuing process can be used only when information is registered in the tag authentication table 110.

[Issue processing]
In the issuing process in the present embodiment, the CPU 20 of the tag issuing device 2 executes a control program for issuing process stored in the memory 21 and operates according to the flowchart of FIG.

  That is, first, the CPU 20 receives an input of a product code that is identification information of a product to be discounted (step S401). The product code may be input by reading the barcode attached to the product by the barcode scanner 13 of the POS terminal 1, or the operation unit 14 of the POS terminal 1 or the operation unit 24 of the tag issuing device 2. It may be input by operation.

  When the product code is input, the CPU 20 accepts designation of a discount / discount type (step S402). When the store clerk operates the operation unit 24 and designates the discount / discount type, the CPU 20 accepts the input of the discount amount if the discount is designated, and accepts the input of the discount rate if the discount is designated. (Step S403). When the store clerk operates the operation unit 24 and inputs a discount amount or discount rate, the CPU 20 encodes the EPC using the specified discount / discount type and the input discount amount or discount rate (step S404). ). As a result, for example, if discount is specified and 50 yen is entered as the discount amount, EPC “urn: epc: tag: gid-96: 0.0.50” is generated, discount is specified, discount rate If 50% is input, an EPC “urn: epc: tag: gid-96: 0.1.50” is generated.

  After encoding the EPC, the CPU 20 generates an arbitrary access password by using a random number (step S405). Thereafter, the CPU 20 controls the RFID reader / writer 26 to write the generated EPC in the EPC area of the RFID tag set in the tag issuing device 2 (step S406), and the access password generated in the process of step S405 is stored. Writing is performed in the reserved area of the RFID tag (step S407), and the product code input in the process of step S401 is written in the user area of the RFID tag (step S408). Further, the EPC area is write-locked, and the reserved area and the user area are read / write-locked (step S409). Thereafter, the CPU 20 controls the printer 23 to print information indicating the value discount content, for example, “50 yen discount” or “50% discount” on the printing surface of the RFID tag (step S411).

  Thus, the RFID tag on which the EPC and the access password are written and the information indicating the contents of the discount is printed is issued from the issuing port of the tag issuing device 2 as the discount tag 3 or the discount tag 5, and the series of processing ends. .

[Accounting]
Next, the accounting process in this embodiment will be described. The CPU 10 of the POS terminal 1 executes a control program for accounting processing stored in the memory 11 and operates according to the flowchart of FIG.
That is, first, the CPU 20 controls the RFID reader 17, and the tag ID stored in the EPC area and the TID area stored in the EPC area of the RFID tag on the checkout counter, that is, the product tag 4, the discount tag 3 and the discount tag 5. Is read (No in steps S501 and S502: first control means). At this time, if the RFID reader 17 receives the EPC and tag ID returned from the RFID tag (Yes in step S502), the CPU 10 determines that the responding RFID tag is used for the current accounting process based on the received tag ID. Then, it is determined whether or not it has been read (step S503). If the same tag ID as the received tag ID has already been received in the current accounting process, it is determined that the responding RFID tag has been read (Yes in step S503), and the received EPC is discarded. Then, the process returns to step S501.

  On the other hand, when the same tag ID as the received tag ID has not been received in the current accounting process, it is determined that the responding RFID tag has not been read (No in step S503), and the CPU 10 performs the reception. The type of the RFID tag that has responded is determined based on the EPC (step S504). When the EPC indicates a product, the CPU 10 determines that the responding RFID tag is the product tag 4 (“product tag” in step S504), and executes product registration processing (step S505). Specifically, the product information (product name, price, etc.) of the product indicated by the product code in the EPC is specified with reference to the product master stored in advance in the memory 11, and the transaction formed in the memory 11 is specified. Register in the registration area for processing. If there is a product to which the product tag 4 is not attached, the product information of the product may be input by the barcode scanner 13 or the operation unit 14.

  On the other hand, if the EPC indicates a discount or discount in the process of step S504, the CPU 10 determines that the responding RFID tag is the discount tag 3 or the discount tag 5 ("discount tag, discount tag" in step S504). ), A value discount process is executed (step S506). In the price discount process, only when the discount tag 3 or the discount tag 5 is usable, value discount information indicating a discount amount, a discount rate, a target product, etc. is stored in the registration area of the memory 11. Details of the value discount process will be described later with reference to FIG.

  After the merchandise registration process or the value discount process, the CPU 10 determines whether or not the end of reading the RFID tag is instructed (step S507). If the end of reading has not been instructed yet (No in step S507), the CPU 10 returns to the process in step S501 and tries to read the RFID tag again. When the reading of all the RFID tags on the register counter is completed, the store clerk operates the operation unit 14 to instruct the end of reading. When this instruction is given (Yes in step S507), the CPU 10 determines whether or not value discount information is registered in the registration area of the memory 11 (step S508). If even one value discount information is registered (Yes in step S508), the CPU 10 determines whether or not the product information of the target product for value discount indicated by each value discount information is stored in the registration area. Determination is made (step S509). If there is value discount information in which product information of the target product is not stored (No in step S509), the value discount information is deleted from the registration area (step S510).

  When no value discount information is stored in the registration area (Yes in step S509), or after the processing in step S510, the CPU 10 is based on the product information and value discount information stored in the registration area. The total price of each product is calculated and displayed on the display 25 (step S511). Further, payment of money by cash, credit card, electronic money or the like is accepted (step S512), and the receipt printer 16 is controlled to issue a receipt for the transaction (step S513). Thus, a series of processing is completed.

[Value discount processing]
Next, the value discount process will be described. In the value discount process, the CPU 10 of the POS terminal 1 operates according to the flowchart of FIG. That is, first, the CPU 10 determines whether or not the EPC read in the immediately preceding step S501 is registered in the tag authentication table 110 (step S601). If registered (Yes in step S601), the CPU 10 controls the RFID reader 17 and tries to read the reserved area of the RFID tag that has read EPC or the like in the immediately preceding step S501 (step S602). . At this time, the access password is not specified.

  Thereafter, the CPU 10 determines whether or not the reserved area has been read successfully (step S603). When the access password is not read from the reserved area (No in step S603), the CPU 10 controls the RFID reader 17 and is registered in the tag authentication table 110 in association with the EPC read in the immediately preceding step S501. The access password is designated, and an attempt is made to read the reserved area of the same RFID tag again (step S604). Here, the process of step S602-S604 comprises the 2nd control means in this embodiment.

  Thereafter, the CPU 10 determines whether or not the reserved area has been successfully read (step S605). When the access password is read from the reserved area (Yes in step S605), the CPU 10 controls the RFID reader 17 and tries to read the user area of the RFID tag that has read EPC or the like in the process of the previous step S501. (Step S606). At this time, the access password is not specified.

  Thereafter, the CPU 10 determines whether or not the user area has been successfully read (step S607). If the product code has not been read from the user area (No in step S607), the CPU 10 controls the RFID reader 17 and is registered in the tag authentication table 110 in association with the EPC read in the immediately preceding step S501. An access password is designated, and an attempt is made to read the user area of the same RFID tag again (step S608). Here, the process of step S606-S608 comprises the 3rd control means in this embodiment.

  Thereafter, the CPU 10 determines whether the user area has been successfully read (step S609). If the product code can be read from the user area (Yes in step S609), the RFID tag is the regular discount tag 3 or discount tag 5 issued from the tag issuing device 2, and therefore the CPU 10 performs the previous step S501. In the process, the discount amount or discount rate indicated by the EPC read from the RFID tag and the discount information indicating the product code read from the user area are registered in the registration area formed in the memory 11 (step S610: process) Means), a series of processing ends. When the discount information stored in the registration area of the memory 11 is related to the discount, the discount indicated by the discount information is discounted from the price of the target product in the process of step S511. It is burned. If the value discount information stored in the registration area relates to discounts, the price of the target product is discounted according to the discount rate indicated by the value discount information in the process of step S511.

  Here, if the EPC read in the immediately preceding step S501 is not registered in the tag authentication table 110 in the process of step S601 (No in step S601), the reserved area without specifying a password in the process of step S602. If the access password cannot be read from the reserved area even though the access password is specified in the process of step S604 (No in step S605), the RFID tag is This means that neither the discount tag 3 issued from the tag issuing device 2 nor the discount tag 5 is used. That is, there is a probability that the tag is a forged tag. Therefore, the CPU 10 notifies the fact that the RFID tag cannot be used for discounting the price by displaying a warning message on the display 15 (step S611: notification means). Thereafter, the value discount process is terminated without storing the value discount information in the registration area of the memory 11, and the process proceeds to Step S507.

  Similarly, when the product code can be read from the user area without specifying the password in the process of step S606 (Yes in step S607), the product code is received from the user area even though the access password is specified in the process of step S608. If it cannot be read (No in step S609), the RFID tag is neither the discount tag 3 issued from the tag issuing device 2 nor the discount tag 5. Therefore, the CPU 10 notifies the fact that the RFID tag cannot be used for discounting the price by displaying a warning message on the display 15 (step S611: notification means). Thereafter, the value discount process is terminated without storing the value discount information in the registration area of the memory 11, and the process proceeds to Step S507.

  As described above, in the present embodiment, the target of value discount by the discount tag 3 and the discount tag 5 is limited to a specific product stored in the user area. With such a configuration, it is possible to prevent fraud such as receiving a transaction by peeling off the discount tag 3 or the discount tag 5 attached to a specific product and attaching it to a product that is not subject to value discount.

In addition to the reserved area, the user area is first read without specifying an access password, and if it cannot be read, an access password is specified and reading is attempted. If the data can be read without specifying the password, or if the data cannot be read even if the password is specified, the use is not notified and the value discount is not performed. By doing in this way, use of a forged tag can be prevented more reliably.
It goes without saying that the same effects as those of the first embodiment can be obtained.

(Modification)
Various modifications can be made to the configurations disclosed in the above embodiments. Specific examples of modifications are as follows.

(1) In each of the above embodiments, the POS system that discounts the price using the discount tag 3 or the discount tag 5 is exemplified. However, the configuration relating to prevention of use of counterfeit tags may be applied to other systems, for example, a system in which an RFID tag is embedded in an ID card and used for personal identification. In this case, a device that issues an ID card serves as a tag issuing means, and a device that reads the ID card for personal identification serves as a wireless communication device. The processing executed by the processing means is processing related to personal identification.

(2) In each of the above embodiments, the case where a system is constructed using a C1Gen2 type RFID tag is illustrated. However, the system may be constructed using an RFID tag of a type other than C1Gen2. Even when an RFID tag of a type other than C1Gen2 is used, a first memory area in which the tag stores code information, and a second memory area that can be read when a preset access password is designated If it has, it is possible to realize the same configuration as the above embodiments.

(3) In 1st Embodiment, the case where it was determined whether the discount tag 3 was a forgery tag using a reserved area as a 2nd memory area was illustrated. However, appropriate data may be written in the user area, and the user area may be used as the second memory area instead of the reserved area. In this case, in the process of step S302 of the discount process shown in FIG. 8, an attempt is made to read the user area without specifying a password, and in the process of step S304, the authentication code is specified as the password to read the user area. Try. In both the first and second embodiments, when a system is constructed using a tag of a type other than C1Gen2, any area that can be read-locked among the memory areas of the tag is designated as the first. It may be used as two memory areas.

(4) In each of the above embodiments, the case where it is determined whether or not the tag is a forgery tag using the access password stored in the reserved area is illustrated. However, instead of the access password, a similar configuration may be realized using a kill password that is also stored in the reserved area.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... POS terminal, 2 ... Tag issuing device, 3 ... Discount tag, 4 ... Product tag, 5 ... Discount tag, 10, 20 ... CPU, 11, 21 ... Memory, 17 ... RFID reader, 23 ... Printer, 26 ... RFID reader / writer, 110 ... tag authentication table

Claims (6)

Wireless communication means for wirelessly communicating with a wireless tag having a first memory area storing code information and a second memory area readable when a preset access password is designated;
Storage means for storing a pre-specified access password;
First control means for reading a tag code stored in a first memory area of a predetermined wireless tag by wireless communication of the wireless communication means;
By the wireless communication of the wireless communication means, an attempt is made to read the second memory area of the predetermined wireless tag without specifying an access password. If the read cannot be performed, the access password stored in the storage means is specified and the same is specified. Second control means for trying to read the second memory area of the wireless tag;
When the second memory area of the predetermined radio tag is read by designating the access password stored in the storage means by the second control means, the code read from the radio tag by the first control means Processing means for executing predetermined processing using information;
A wireless communication apparatus comprising:   When the second control means can read the second memory area of the predetermined wireless tag without specifying the access password, or even if the access password stored in the storage means is specified, 2. The wireless communication apparatus according to claim 1, further comprising notification means for notifying predetermined information when the two memory areas cannot be read. The wireless tag further includes a third memory area in which identification information of an article is stored.
The storage means stores pre-specified code information and an access password in association with each other,
Further comprising third control means for reading identification information stored in a third memory area of the predetermined wireless tag by wireless communication of the wireless communication means;
When the second memory area of the predetermined wireless tag is read by designating the access password stored in the storage means by the second control means, the processing means reads the code read by the first control means 3. The wireless communication apparatus according to claim 1, wherein a predetermined process is performed on an article indicated by the identification information read by the third control unit using information. A computer control program comprising wireless communication means for wirelessly communicating with a wireless tag having a first memory area storing code information and a second memory area readable when a preset access password is designated There,
In the computer,
A first control function for reading a tag code stored in a first memory area of a predetermined wireless tag by wireless communication of the wireless communication means;
An attempt is made to read the second memory area of the predetermined wireless tag without specifying an access password by wireless communication of the wireless communication means, and if it cannot be read, an access password stored in advance in a predetermined storage means is specified. A second control function for trying to read the second memory area of the wireless tag;
The code read from the wireless tag by the first control function when the second memory area of the predetermined wireless tag is read by designating the access password stored in the storage means by the second control function A processing function for executing predetermined processing using information;
Control program to realize. Tag issuing means for issuing a wireless tag having a first memory area in which code information is stored and a second memory area that is readable when a preset access password is designated;
A wireless communication means for wirelessly communicating with the wireless tag;
Storage means for storing the access password of the wireless tag issued by the tag issuing means;
First control means for reading code information stored in a first memory area of a predetermined wireless tag by wireless communication of the wireless communication means;
By the wireless communication of the wireless communication means, an attempt is made to read the second memory area of the predetermined wireless tag without specifying an access password. If the read cannot be performed, the access password stored in the storage means is specified and the same is specified. Second control means for trying to read the second memory area of the wireless tag;
When the second memory area of the predetermined radio tag is read by designating the access password stored in the storage means by the second control means, the code read from the radio tag by the first control means Processing means for executing predetermined processing using information;
A wireless communication system comprising:   When the second control means can read the second memory area of the predetermined wireless tag without specifying the access password, or even if the access password stored in the storage means is specified, 6. The wireless communication system according to claim 5, further comprising notification means for notifying predetermined information when the two memory areas cannot be read.

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