Patent ID: 7578448

Claim:
A method comprising: receiving a customer payment device transaction request, an encrypted customer payment device authentication code, and a unique customer payment device identification code from a radio frequency (RF) customer payment device, wherein the encrypted customer payment device authentication code is associated with a customer payment device authentication code; decrypting the encrypted customer payment device authentication code using a unique customer payment device decryption key corresponding to the unique customer payment device identification code, to create a decrypted customer payment device authentication code; authenticating the RF customer payment device in response to the decrypted customer payment device authentication code matching the customer payment device authentication code; and authorizing the customer payment device transaction request in response to transaction keystroke scan sample data matching registered keystroke scan sample data, wherein the registered keystroke scan sample data is associated with the RF customer payment device and the registered keystroke scan sample data is created in response to verification of proffered keystroke scan sample data, and wherein the RF customer payment device is activated in response to the verification of the proffered keystroke scan sample data.