Electronic receipt system, terminal device and method of providing electronic receipt

Abstract

An electronic receipt system includes a terminal device, a first memory unit which a first user has, and a second memory unit which a second user who is a trading partner of the first user has. The terminal device includes biometric authentication obtaining means to obtain biometric authentication information of the first user and biometric authentication information of the second user; electronic tally generating means to generate electronic tallies based on the biometric authentication information of the both users; electronic receipt generating means to generate electronic receipts including transaction information of the first user and the second user, the electronic receipts including a first electronic receipt having one of the electronic tallies and a second electronic receipt having another of the relevant electronic tallies; means to store the first electronic receipt in the first memory unit; and means to make the second electronic receipt to be stored in the second memory unit.