Patent ID: 11943363
Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A method comprising:
receiving, at a match server from a service provider computer, a plurality of encrypted biometric templates and a plurality of biometric identifiers, respectively, wherein the plurality of biometric identifiers correspond to a plurality of users, respectively, each of the plurality of biometric identifiers comprising a random number or string of characters that does not reveal information about a corresponding user;
receiving, by the match server from an access device, an encrypted authentication biometric template associated with a transaction and a first biometric identifier corresponding to a first user operating a user device among the plurality of users, wherein the user device obtained the first biometric identifier as an encrypted first biometric identifier encrypted with an encryption key corresponding to a decryption key, wherein having by the user device the decryption key enabled the user device to decrypt the encrypted first biometric identifier, wherein the decrypting the first biometric identifier by the user device caused the match server to receive the encrypted authentication biometric template and the first biometric identifier;
generating, by the match server, a plurality of encrypted match result data files by comparing the encrypted authentication biometric template to each of the plurality of encrypted biometric templates;
identifying, from the plurality of encrypted match result data files, a match between one of the plurality of encrypted match result data files and the encrypted authentication biometric template; and
initiating the transaction using account information associated with the closest match.