Patent ID: 7249110

Claim:
An authentication method, comprising: (a) receiving a first identifier of a user and a password from the user at a point of service (POS) terminal; (b) obtaining a first password corresponding to said first identifier; (c) identifying said user by comparing the first password and said password received from the user; (d) thereafter, obtaining a second password and a second identifier corresponding to said first identifier, said second identifier comprising a mobile terminal call number of a communication terminal; (e) thereafter, establishing a communication link between a signal source and the communication terminal using the second identifier for the purpose of third party authentication of said user; (f) receiving another password from the communication terminal; and (g) establishing authentication of said user when said another password matches said second password, wherein: step (b) includes correlating the first identifier with corresponding information stored in a database to obtain said first password from the corresponding information.