Identiconとは 意味・読み方・使い方

An Identicon is a visual representation of a hash value, usually of the IP address, serving to identify a user of a computer system; compare avatars. The original Identicon is a 9-block graphic, which has been extended to other graphic forms by third parties some of whom have used MD5 instead of the IP address as the identifier. In summary, an Identicon is a privacy protecting derivative of each user's IP address built into a 9-block image and displayed next the user's name. A visual representation is thought to be easier to compare than one which uses only numbers and more importantly, it maintains the person's privacy. The Identicon graphic is relatively unique since it's based on the user's IP, but it is not possible to recover the IP by looking at the Identicon.