JP7352263B2 - Payment systems, mobile devices, and payment methods - Google Patents

Description

The present invention relates to a payment system including a POS (Point of Sales) terminal, etc., and particularly relates to a payment system, a mobile terminal, and a payment method for inputting purchased products and making payments.

Labor shortages due to a decline in the working population are one of the important issues facing Japan in recent years, and in the future Japan will need to carry out work with fewer workers.

Labor shortages are also a problem in the retail industry. With current common POS terminals, the POS terminal occupancy time per shopper is long. This makes it easy for shoppers to form long lines in front of the cash register. In order to shorten the queue at the cashier, one possible solution would be to increase the number of POS terminals and increase the number of cashiers, but this solution is difficult due to the lack of workers. .

Other solutions include semi-self-checkout or self-checkout. Here, the operation of inputting the unit price and quantity of a product, such as reading the barcode of the product, is referred to as an input operation. Furthermore, the operations from calculating the total amount based on the input to accepting payment by cash, card, etc. are referred to as payment operations. In the case of self-checkout, shoppers use a POS terminal to perform everything from input operations to payment operations. In the case of semi-self-checkout, normally only input operations are performed by the cashier at the POS terminal. A payment terminal will be installed separately from the POS terminal, and payments will be made by shoppers.

At self-checkout and semi-self-checkout, shoppers handle some or all of the payment processing. As a result, stores can process more payments in a shorter time with the same number of cashiers.

Patent Document 1 is a document that describes technology related to the present invention. In Patent Document 1, a self-checkout terminal and a POS terminal are installed in a store. A self-checkout terminal is a terminal where a customer inputs the product information of the purchased product himself/herself, and issues a receipt on which the entered information of the purchased product is printed (paragraph 0028 of the same document). After that, the customer takes the receipt issued by the self-checkout terminal to the POS terminal and hands it to the person in charge of the POS terminal, who then scans the receipt using the scanner installed in the POS terminal. The printed two-dimensional code is read (paragraph 0030 of the same document).

Japanese Patent Application Publication No. 2012-190246

According to the solution using semi-self-checkouts and self-checkouts, it is necessary to newly introduce POS terminals that are compatible with semi-self-checkouts and self-checkouts.

The present invention was made in view of these circumstances, and the problem to be solved by the present invention is to provide a payment method that can shorten the time each shopper occupies a payment terminal during payment processing. The goal is to provide a system.

In order to solve the above problems, one aspect of the present invention is a payment system including a mobile terminal and an information processing terminal, in which the mobile terminal is attached to each of a plurality of products in accordance with a customer's operation. The information processing terminal includes a first reading means for reading a first identifier read by the first reading means, and a display means for displaying a second identifier including information regarding the product read by the first reading means. A payment system is provided, comprising a second reading means for reading the displayed second identifier as an identifier related to the transaction.

In addition, as another aspect of the present invention, there is provided a first reading means for reading a first identifier attached to each of a plurality of products in accordance with a customer's operation; A display means for displaying a second identifier including information regarding a product is provided.

In addition, as another aspect of the present invention, the present invention includes a first reading step of reading a first identifier attached to each of a plurality of products in response to a customer's operation; The present invention provides a method for operating a mobile terminal, including a display step of displaying a second identifier including information about a product purchased.

In addition, as another aspect of the present invention, the present invention provides a first reading step of reading a first identifier attached to each of a plurality of products in accordance with a customer's operation, and a product read in the first reading step. A payment method is provided, which includes a display step of displaying a second identifier including information related to payment, and a second reading step of reading the displayed second identifier as an identifier related to payment.

According to the present invention, it is possible to omit the time required to read one-dimensional codes from individual products at the payment terminal, and to shorten the time each shopper occupies the payment terminal.

1 is a block diagram of a payment system 1 according to a first embodiment of the present invention. 3 is a diagram for explaining the operation of the payment system 1. FIG. FIG. 2 is a block diagram of a payment system 50 according to a second embodiment of the present invention. 5 is a diagram for explaining the operation of the payment system 50. FIG.

A payment system 1 that is a first embodiment of the present invention will be described. In the payment system 1, before a shopper lines up at the cash register, the shopper uses his/her own mobile terminal 2 to read the one-dimensional code (barcode) of the product and selects the product code corresponding to the one-dimensional code of the multiple products to be purchased. is converted into a single two-dimensional code and displayed. The payment terminal (POS terminal) reads the displayed two-dimensional code and processes the payment.

The payment system 1 includes a mobile terminal 2, a payment terminal 3, and a database (DB) 4. The payment system 1 is used, for example, in a store such as a supermarket or a convenience store, when a shopper pays for products purchased. It is assumed that each product in a store is given a product code as an identifier for identifying the product, and a one-dimensional code representing the product code, a so-called barcode, is attached to the product.

It does not matter how the barcode is attached to the product. For example, a barcode may be printed directly on the product or its packaging, or a sticker on which the barcode is printed may be affixed to the product or its packaging. Instead of attaching a barcode to the product or its packaging itself, it may be displayed on a shelf or the like where the product is displayed.

The mobile terminal 2 is a portable information processing device. For example, a smartphone, a mobile phone terminal, a PDA (Personal Data Assistant), a tablet, or a laptop computer can be used as the mobile terminal 2, and a smartphone or a tablet is particularly suitable. In the case of a smartphone or tablet, the mobile terminal 2 includes hardware such as a solid-state image sensor, a display device, and a processor that the smartphone or tablet has, and an OS (Operating System) such as Android, iOS, or Windows mobile, which operates on these OSes. It is realized as a combination of application software.

The mobile terminal 2 is assumed to be the personal property of the shopper. When the mobile terminal 2 is a shopper's smartphone or tablet, the shopper has installed the above-mentioned application software in advance.

The mobile terminal 2 includes a one-dimensional code reading section 21, a two-dimensional code generating section 22, a display section 23, an input section 24, and a control section 25.

The one-dimensional code reading unit 21 is equipped with a solid-state image sensor such as a CCD (Charge-Coupled Device) image sensor or a CMOS (Complementary Metal-Oxide-Semiconductor) image sensor, and reads the product code of the product from the barcode attached to the product. read. Every time a shopper photographs a one-dimensional code of a product to be purchased using this solid-state image sensor, a one-dimensional code reading section 21 extracts the product code of the product from the photographed barcode. Further, the one-dimensional code reading unit 21 generates a product details including the product code based on the extracted product code. Each time the one-dimensional code reading unit 21 reads a one-dimensional code, it adds a corresponding product code to the product details.

The two-dimensional code generation unit 22 obtains a two-dimensional code corresponding to one or more product codes registered in the product details, and outputs image information indicating the two-dimensional code. The type of two-dimensional code does not matter. For example, it may be a matrix type two-dimensional code such as a QR code (registered trademark) in which small squares are arranged at the four corners. Alternatively, it may be a stacked two-dimensional code in which a plurality of barcodes are stacked one above the other. If the number of input product codes is large, multiple two-dimensional codes are generated.

The display unit 23 is a display device such as a liquid crystal display device or an OEL (Organic Electro-Luminescence) display device. The display unit 23 displays the latest product details generated by the one-dimensional code reading unit 21. Furthermore, the display section 23 displays the two-dimensional code generated by the two-dimensional code generation section 22.

The input unit 24 is an input device such as a keyboard or a mouse. In the case of a smartphone or a tablet, the display section 23 and input section 24 are combined and implemented as a touch panel. The input section 24 also operates as a numerical input means.

The control unit 25 is a control device that controls each part of the mobile terminal 2, and includes a processor, memory, and the like.

The payment terminal 3 is, for example, a POS (Point Of Sales) terminal. The payment terminal 3 is installed at the cash register of the store. The cashier at the store operates the payment terminal 3 to perform payment processing, receives payment from the shopper, and hands change and a receipt to the shopper. The payment terminal 3 includes a two-dimensional code reading section 31 and a payment processing section 32. Note that the payment terminal 3 may be a self-checkout or a semi-self-checkout. In this case, the shopper performs the operations performed by the cashier.

The two-dimensional code reading unit 31 includes a solid-state image sensor such as a CCD image sensor or a CMOS image sensor, reads the two-dimensional code displayed on the display unit 23 of the mobile terminal 2, and extracts one or more product codes.

The payment processing unit 32 performs payment processing based on the product code output by the two-dimensional code reading unit 31. The payment processing unit 32 receives the price corresponding to the product code received from the two-dimensional code reading unit 31 from the product master 41, which will be described later, and calculates the total price of the product that the shopper intends to purchase based on the price. . Thereafter, the payment processing unit 32 performs payment using cash, card, etc. based on the calculated total amount.

The database 4 is a database management system that stores a product master 41. The product master 41 is a table in which, for each product sold by a store, a product code indicating the product, a product name, a price of the product, a quantity of the product in stock, etc. are stored in association with each other. The database 4 and the product master 41 function as storage means for storing a product master that associates a product code with the price of the product indicated by the product code.

Note that the configuration of the payment terminal 3 is a general configuration except that it includes the two-dimensional code reading section 31. That is, the payment terminal 3 can be realized by adding, for example, a QR barcode reader as the two-dimensional code reading section 31 to a POS terminal already installed in the store. Therefore, the payment terminal 3 can be installed in a store at a relatively low cost based on an existing POS terminal, and the introduction cost can be suppressed.

An overview of the operation of the payment system 1 will be explained. Using the one-dimensional code reading unit 21 of the mobile terminal 2 that the shopper owns, the shopper reads the one-dimensional code (barcode) of each item to be purchased and places the item in the shopping cart. The shopper repeats this process until all items to be purchased are placed in the shopping cart. After reading the one-dimensional codes from all the products to be purchased by the one-dimensional code reading section 21 and placing the products in the shopping cart, the shopper performs a predetermined operation on the mobile terminal 2. In response to this predetermined operation, the two-dimensional code generation unit 22 of the mobile terminal 2 generates a two-dimensional code from the read product codes of the plurality of products, and displays the two-dimensional code on the display unit 23. The cashier uses the two-dimensional code reading section 31 of the payment terminal 3 to read the displayed two-dimensional code. The payment processing unit 32 of the payment terminal 3 acquires one or more product codes corresponding to the two-dimensional code. The payment processing unit 32 of the payment terminal 3 queries the product master 41 of the database 4 about the price of the product based on the obtained product code.

The operation of the payment system 1 will be explained in detail with reference to FIG.

The shopper selects the product he/she wishes to purchase from among the products displayed in the store and places the selected product in the shopping cart. When placing a product in the shopping cart, the shopper uses the one-dimensional code reading section 21 of the mobile terminal 2 to read the barcode of the product. The one-dimensional code reading unit 21 sequentially registers the products whose barcodes have been read into the product details (step S1). The product details are a list of product codes indicated by the one-dimensional codes read by the one-dimensional code reading section 21. When purchasing multiple identical products, barcodes may be read for each of the products. Alternatively, after reading the barcode from one product, the number of products may be input via the input unit 24. When canceling the purchase of a product registered in the product details, the shopper performs an operation to delete the corresponding detail line from the product details displayed on the display unit 23 via the input unit 24.

Once all the products to purchase have been determined, the shopper performs a predetermined operation via the input unit 24. In response to this predetermined operation, the two-dimensional code generation unit 22 generates a two-dimensional code based on the product details. The display unit 23 displays the two-dimensional code (step S2). The shopper then moves to the payment terminal 3.

The cashier uses the two-dimensional code reading section 31 to read the two-dimensional code displayed on the display section 23 (step S3). If the payment terminal 3 is an unmanned terminal such as a self-checkout or semi-self-checkout, the shopper uses the payment terminal 3 to perform this operation.

The payment processing unit 32 of the payment terminal 3 obtains the price of each product from the product master 41 of the database 4 based on the product code indicated by the two-dimensional code (step S4), and calculates the total price of all the products to be purchased. , performs payment (step S5).

According to payment system 1, there are the following effects.

Generally, when linking data between terminals, wired or wireless communication is often performed between the terminals. However, connecting a shopper's mobile device to the store's network is not desirable from a security perspective. Furthermore, in offline environments such as event halls where it is difficult to install communication equipment, it is difficult to use methods that assume communication. However, in the payment system 1, data is transmitted through optical reading of a two-dimensional code displayed on a display device. Therefore, the above-mentioned security problem does not occur, and it can be easily applied to an offline environment.

Furthermore, in the payment system 1, barcode reading of products can be performed at a location other than the vicinity of the cash register where the payment terminal 3 is located. Therefore, the payment terminal 3 does not need to read the barcode of the product. The payment terminal 3 only needs to perform almost payment processing. Since the amount of processing performed by the payment terminal 3 is reduced, the time that one shopper occupies the payment terminal 3 is shortened, and the time the shopper waits in front of the payment terminal 3 can be shortened. Alternatively, the number of payment terminals installed in a store can be reduced, and the number of cashiers required for store operation can be reduced.

A payment system 50 according to a second embodiment of the present invention will be described. In the above-described payment system 1, it is not determined whether the products registered by the shopper in the product details and the products added to the shopping cart by the shopper match. The payment system 50 determines whether the two match or do not match.

When compared with the above-mentioned payment system 1 with reference to FIG. For each product being sold, the table stores the product code, product name, price, quantity in stock, etc. of each product, as well as the weight of the product in relation to each other. are different.

The weighing scale 33 is a weighing scale for measuring the weight of the product that the shopper intends to purchase. The weight comparison unit 34 acquires the weight of each product from the product master 41 based on the product code obtained from the two-dimensional code reading unit 31. Then, the weight comparison unit 34 compares the total weight acquired from the product master 41 and the total weight of the products measured by the scale 33. Based on the comparison result, the weight comparison unit 34 determines whether the product registered by the shopper in the product details matches the product the shopper is about to purchase. If there is a mismatch, the weight comparison unit 34 outputs a message notifying the mismatch.

The operation of the payment system 50 will be explained with reference to FIG. 4.

Steps S11 to S14 are similar to steps S1 to S4 described above. Next, the cashier uses the weighing scale 33 to measure the weight of all the products that the shopper intends to purchase (step S15). After measuring the weight of the entire shopping cart with the products placed in it, the pre-measured weight of the shopping cart alone may be subtracted. Alternatively, items may be taken out of the shopping cart, the weight of each item may be measured, and the total weight may be calculated.

Next, the weight comparison section 34 obtains the weight of each product from the product master 41 based on the product code obtained from the two-dimensional code reading section 31, and calculates the total value (step S16).

Next, the weight comparison unit 34 compares the weight of the entire product to be purchased, measured by the scale 33, with the total weight of the products obtained from the product master 41 (step S17).

If the two match, the weight comparison unit 34 determines that the product registered in the product details and the product that the shopper brought with him to purchase match. In this case, the payment processing unit 32 directly executes the payment processing. The payment process is similar to step S5 described above.

On the other hand, if the two do not match, the weight comparison unit 34 outputs a message notifying the mismatch. Possible output formats for the message include outputting it as a sound from a speaker (not shown) of the payment terminal 3A, or outputting it as an image or moving image from a display device (not shown) of the payment terminal 3A. A combination of these may also be used. In this case, the payment processing unit 32 does not perform payment processing.

Incidentally, if the payment terminal 3A is an unmanned terminal and there is no cashier, the shopper performs the above-mentioned work performed by the cashier.

In this way, according to the payment system 50, in addition to the effects of the payment system 1, the validity of the sales details can be confirmed by comparing the logical value and the measured value for the total weight of purchased products. play.

The present invention is not limited to the first and second embodiments described above. For example, in the above-described embodiment, the code read by the mobile terminal 2 was described as a one-dimensional code, and the code displayed on the mobile terminal 2 and read by the payment terminal 3/3A was described as a two-dimensional code. However, these codes may be optically readable codes. For example, instead of the one-dimensional code reading unit 21, OCR (Optical Character Recognition) may be performed. In this case, instead of one-dimensional codes, human-readable characters (hiragana, katakana, kanji, alphabets, symbols, etc.) are used to display information about the product, such as the product name, on the product or on the shelf where the product is displayed. is presented. The mobile terminal 2 mechanically recognizes the presented characters using OCR. The same applies to the code generated by the two-dimensional code generation section 22 and read by the two-dimensional code reading section 31.

Furthermore, in the first and second embodiments, the mobile terminal 2 was described as generating a product specification consisting of a product code and displaying it on the display unit 23, but instead of the product specification consisting of a product code, Alternatively, a product detail consisting of a product name and a product detail consisting of a product code and a product name may be generated and displayed. For example, a table showing the correspondence between product codes and product names for some or all of the products in a store may be stored in advance in the storage device of the mobile terminal 2 as part of the application software, and then used when generating product details. It is possible to generate such product details by referring to this table. By displaying such product details, shoppers can easily grasp the products currently registered in the product details.

Some or all of the above embodiments may be described as in the following supplementary notes, but are not limited to the following.

(Additional note 1)
A payment system comprising a mobile terminal and a payment terminal,
The mobile terminal is
a first reading means for optically reading a first identifier that is an optically readable identifier and outputting a product code corresponding to the first identifier;
an identifier conversion means for outputting a second identifier that corresponds to the product code and is optically readable and that is different from the first identifier;
and display means for displaying an image of the second identifier,
The payment terminal is
a second reading means for optically reading an image of the second identifier displayed on the display means and outputting the product code corresponding to the second identifier;
and a payment processing means for performing payment processing based on the product code read by the second reading means.

(Additional note 2)
The payment system according to appendix 1, wherein the identifier conversion means outputs one of the second identifiers corresponding to a plurality of the product codes.

(Additional note 3)
The mobile terminal includes a numerical input means for inputting the number of products,
Supplementary Note 1 or 2, wherein the identifier conversion means outputs the second identifier corresponding to the number of products input through the numerical input means and the product code outputted by the first reading means. Payment system described in.

(Additional note 4)
The payment system according to any one of appendices 1 to 3, wherein the first identifier is a one-dimensional barcode and the second identifier is a two-dimensional barcode.

(Appendix 5)
The payment system includes a storage means for storing a product master that associates a product code with a price of the product indicated by the product code,
The payment system according to any one of appendices 1 to 4, wherein the payment terminal acquires a price corresponding to the input product code from the storage means and performs the payment process based on the acquired price.

(Appendix 6)
The payment system includes a storage means for storing a product master that associates a product code with the weight of the product indicated by the product code,
The payment terminal includes a weight scale,
The payment terminal acquires the weight of the product indicated by the product code input via the second reading device from the storage device,
The payment terminal further includes a comparison means for comparing the total weight of the one or more products measured by the scale with the total weight of the one or more products obtained from the product master. The payment system according to any one of Supplementary Notes 1 to 5.

(Appendix 7)
a first reading means for optically reading a first identifier that is an optically readable identifier and outputting a product code corresponding to the first identifier;
an identifier conversion means for outputting a second identifier that corresponds to the product code and is optically readable and that is different from the first identifier;
and display means for displaying an image of the second identifier.

(Appendix 8)
The mobile terminal according to appendix 7, wherein the identifier conversion means outputs one of the second identifiers corresponding to a plurality of product codes.

(Appendix 9)
Equipped with a numerical input means for inputting the number of products,
Supplementary Note 7 or 8, wherein the identifier conversion means outputs the second identifier corresponding to the number of products input through the numerical input means and the product code output by the first reading means. Mobile devices listed in.

(Appendix 10)
The mobile terminal according to any one of attachments 7 to 9, wherein the first identifier is a one-dimensional barcode, and the second identifier is a two-dimensional barcode.

(Appendix 11)
a first reading procedure of optically reading a first identifier that is an optically readable identifier and outputting a product code corresponding to the first identifier;
an identifier conversion procedure for outputting a second identifier that corresponds to the product code and is optically readable and that is different from the first identifier;
A program for causing a processing device of a mobile terminal to execute a display procedure for displaying an image of the second identifier on a display device.

(Appendix 12)
The program according to appendix 11, wherein the identifier conversion procedure outputs one second identifier corresponding to a plurality of product codes.

(Appendix 13)
A program that causes the processing device to further execute a number input procedure for inputting the number of products, the program comprising:
The identifier conversion procedure outputs the second identifier corresponding to the number of products input through the number input procedure and the product code output by the first reading procedure. The program described in.

(Appendix 14)
The program according to any one of attachments 11 to 13, wherein the first identifier is a one-dimensional barcode, and the second identifier is a two-dimensional barcode.

(Appendix 15)
a first reading step of optically reading a first identifier that is an optically readable identifier using a mobile terminal to obtain a product code corresponding to the first identifier;
an identifier conversion step of using the mobile terminal to obtain a second identifier that corresponds to the product code and is optically readable and that is different from the first identifier;
a display step of displaying an image of the second identifier using the mobile terminal;
a second reading step of optically reading an image of the second identifier displayed on the mobile terminal using a payment terminal to obtain the product code corresponding to the second identifier;
A payment method including a payment processing step of performing payment processing using the payment terminal based on the product code read in the second reading step.

(Appendix 16)
The payment method according to appendix 15, wherein the identifier conversion step obtains one of the second identifiers corresponding to a plurality of the product codes.

(Appendix 17)
The method further includes the step of inputting a number of products through the mobile terminal;
The step of converting the identifier calculates the second identifier corresponding to the number of products input in the number input step and the product code obtained in the first reading step, as set forth in Supplementary Note 15 or 16. Payment Method.

(Appendix 18)
The payment method according to any one of attachments 15 to 17, wherein the first identifier is a one-dimensional barcode and the second identifier is a two-dimensional barcode.

(Appendix 19)
In the payment processing step, the price corresponding to the product code is obtained from a product master in which the product code and the price of the product indicated by the product code are associated in advance, and the payment processing is performed based on the obtained price. The payment method described in any one of Supplementary notes 15 to 18.

(Additional note 20)
Measuring the weight of one or more products as a whole;
obtaining the weight of each of the one or more products from a product master in which a product code and the weight of the product indicated by the product code are associated in advance;
According to any one of appendices 15 to 19, further comprising the step of comparing the measured weight of the entire one or more products with the total weight of the one or more products obtained from the product master. Payment method listed.

1, 50 Payment system 2 Mobile terminal 3, 3A Payment terminal 4 Database (DB)
21 One-dimensional code reading section 22 Two-dimensional code generation section 23 Display section 24 Input section 25 Control section 31 Two-dimensional code reading section 32 Payment processing section 33 Weight scale 34 Weight comparison section 41 Product master

Claims (12)

In a payment system that is equipped with a mobile terminal and an information processing terminal and is used when paying for products purchased by a shopper ,
The mobile terminal is
a first reading unit that reads a first identifier attached to each of the plurality of products to be purchased and generates product details on its own terminal in response to an operation by the shopper ;
display means for displaying a second identifier containing information regarding the plurality of products read by the first reading means and registered in the product details ;
Equipped with
The information processing terminal is
A payment system comprising second reading means for reading the displayed second identifier as an identifier related to payment. 2. The payment system according to claim 1, wherein the information processing terminal includes payment processing means for performing payment processing in response to reading by the second reading means. 3. The payment system according to claim 1, wherein the mobile terminal is a terminal owned by the customer. the first identifier corresponds to a product code;
4. The payment system according to claim 1, wherein the second identifier corresponds to a product code of the plurality of products . 4. The payment system according to claim 1, wherein the second identifier is an identifier different from the first identifier. The mobile terminal includes a numerical input means for inputting the number of products,
Any one of claims 1 to 5, wherein the display means displays the number of products input through the numerical input means and the second identifier corresponding to the product code output by the first reading means. Payment system described in Kani. 7. The payment system according to claim 1, wherein the first identifier is a one-dimensional barcode and the second identifier is a two-dimensional barcode. The payment system includes a first storage means for storing a product master that associates a product code with a price of the product indicated by the product code,
The payment method according to any one of claims 1 to 7, wherein the information processing terminal acquires a price corresponding to the input product code from the first storage means and performs payment processing based on the acquired price. system. The payment system includes a second storage means for storing a product master that associates a product code with the weight of the product indicated by the product code,
The information processing terminal includes a weighing scale,
The information processing terminal acquires, from the second storage means, the weight of the product indicated by the product code input via the second reading means,
The information processing terminal includes a comparison means for comparing the total weight of one or more products measured by the scale with the total weight of the one or more products obtained from the product master. The payment system according to any one of claims 1 to 8, further comprising: a first reading means that reads a first identifier attached to each of a plurality of products to be purchased and generates product details on its own terminal in response to an operation by a shopper ;
display means for displaying a second identifier containing information regarding the plurality of products read by the first reading means and registered in the product details ;
A mobile terminal characterized by being equipped with. a first reading stage in which a mobile terminal is used to read a first identifier attached to each of a plurality of products to be purchased in response to an operation by a shopper and generate product details on the terminal ;
a display step of displaying , using the mobile terminal, a second identifier containing information regarding the plurality of products read in the first reading step and registered in the product details ;
A payment method including a second reading step of reading the displayed second identifier as an identifier related to payment using an information processing terminal . a first reading step of generating product details on the mobile terminal by reading a first identifier attached to each of the plurality of products to be purchased in accordance with the shopper's operation;
A method for operating a mobile terminal, including a display step of displaying , using the mobile terminal, a second identifier containing information regarding the plurality of products read in the first reading step and registered in the product details .

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