Patent ID: 7784684

Claim:
A method, comprising: providing a secure transaction server (STS); providing a point of sale (POS) device; providing an authentic mobile purchasing device, according to an authentication parameter of the STS; providing a short-range communication method between the POS device and the mobile purchasing device; correlating by the STS a personal identification entry (PIE) and the authentic mobile purchasing device; transmitting, by the POS device, a POS purchase action that is POS device authenticable as a POS authenticable POS purchase action to the STS; generating, by the mobile purchasing device, a POS purchase action that is user and mobile purchasing device authenticable by generating a time dependent transformed secure user and mobile purchasing device authenticable POS purchase action based upon both the PIE as input by the user to the authentic mobile purchasing device and a time dependent parameter generated based upon the authentication parameter of the authentic mobile purchasing device; transmitting, by the authentic mobile purchasing device, the time dependent transformed secure user and mobile purchasing device authenticable POS purchase action to the POS device via the short-range communication method; and approving, by the STS, the POS purchase action for the POS device and for the authentic mobile purchasing device, according to the authentic POS device, and according to the authentic mobile purchasing device and the STS correlating of the PIE and the authentic mobile purchasing device.