Patent ID: 7644045

Claim:
A method for enabling identification of a buyer to be used in conjunction with a face to face sales transaction, comprising the steps of: receiving, by a personal device of a buyer, from equipment of a seller, a public key that enables the personal device to encrypt information sent between the personal device of a buyer and the equipment of a seller; generating an electronic portrait of a buyer, the electronic portrait enabling generation of a physical identifier for comparison to the buyer by a seller during the sales transaction; storing the electronic portrait within a digital certificate in a personal device to enable access of the electronic portrait by the seller during the sales transaction wherein the personal device includes a service module stored within a memory of the personal device issued by an issuer that guarantees payment, the service module including at least one private key and the digital certificate, wherein the private key is an encryption tool which, when combined with the public key received from equipment of a seller enables the personal device to encrypt information transmitted between the personal device and the equipment of the seller via a wireless interface; and transmitting the electronic portrait to the seller via the wireless interface during the sales transaction.