PROBLEM TO BE SOLVED: To accurately determine that a person to be authenticated and a writer are the same person.SOLUTION: An attribution guarantee system 1 includes an authentication device 200, an electronic pen 300, and an attribution guarantee device 400 that transmit/receive information through a communication network. The authentication device 200 includes an authentication information extraction part 230 for extracting authentication information for authenticating a person to be authenticated from the person to be authenticated, an authentication processing part 240 for identifying the person to be authenticated by the authentication information, and a first biological information acquisition part 260 for acquiring biological information on the person to be authenticated as first biological information from the person to be authenticated. The electronic pen 300 includes a second biological information acquisition part 340 for acquiring biological information on the writer as second biological information. The attribution guarantee device 400 includes a collation part 450 for collating whether or not the writer is the person to be authenticated identified by the authentication processing part 240 on the basis of the first biological information and the second biological information.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】被認証者と筆記者とが同一であることを正確に判定する。【解決手段】帰属性保証システム1は、通信ネットワークを介して情報を互いに送受信する認証装置200、電子ペン300、及び帰属性保証装置300を備える帰属性保証システム1であって、認証装置200は、被認証者から、被認証者を認証するための認証情報を抽出する認証情報抽出部230と、認証情報によって被認証者を識別する認証処理部240と、被認証者から、被認証者の生体情報を第1の生体情報として取得する第1の生体情報取得部260と、を備え、電子ペン300は、筆記者の生体情報を第2の生体情報として取得する第2の生体情報取得部340、を備え、帰属性保証装置400は、第1の生体情報と第2の生体情報とに基づいて、筆記者が認証処理部240によって識別された被認証者であるか否かを照合する照合部450を備える。【選択図】図2
