Abstract: Techniques are disclosed relating to authentication for user transactions. In some embodiments, a first device of the user provides an option for the user to transfer payment and device signature information to a second device of the user. The second device, in some embodiments, then uses the payment information for payment transactions (which may avoid manual input of payment information). The second device, in some embodiments, transmits the device signature information for the first device to an authentication system. The authentication system, in some embodiments, authenticates the second device based on a match for the signature information for the first device.

Abstract: A method of enrolling a payment card in a mobile wallet app includes receiving, on a mobile device, a request from a user to enroll a financial account in a mobile wallet application installed on the mobile device, sending an enrollment request to a wallet server, the enrollment request including an identification string uniquely associated with the mobile device, receiving a payment token associated with the financial account from the wallet server, and notifying the user that the financial account has been enrolled into the mobile wallet application responsive to receipt of the payment token. Related computer program products are also disclosed.