Patent attributes
Composite biometric authentication is provided to multiple users that share a financial account. The users can enroll the account for composite biometric authentication. The enrollment can include recording multiple biometrics of each user and storing them as a composite to use in authenticating user requests to authorize transactions involving the shared financial account. A unique combination of biometrics can be generated including a biometric of the multiple biometrics of each of the users and stored such that the unique combination must be provided to authenticate a future user request. To proceed with a transaction, a user of the multiple users initiates the transaction and provides their part of the unique combination. The other users provide their part of the unique combination by providing the specific biometric of the multiple biometrics they have previously provided. The transaction proceeds when all shares of the unique combination are provided and authenticated.