Universal Authentication and Data Exchange Method, System and Service

A method for authenticating a first entity to a second entity, the method comprising:

• the first entity supplying a first authentication credential to the second entity using a first communication scheme;
• the first entity supplying a second authentication credential to the second entity using a second communication scheme, wherein the second authentication credential is different from the first authentication credential and wherein the second communication scheme is different from the first communication scheme;
• and
• authenticating the first and second entities responsive to the first and second authentication credentials.

A method for a first wireless communications device to authenticate and communicate with a second wireless communications device, the method comprising:

• exchanging authentication information between the first and second wireless communications devices on a first communication frequency;
• the first wireless communications device authenticating the second wireless communications device according to the authentication information;
• and
• after the step of authenticating, the first and second wireless communications devices exchanging non-authentication information on a second communication frequency different from the first communication frequency.

A method for a first wireless communications device to authenticate and exchange information with a second wireless communications device, the method comprising:

• exchanging authentication information between the first and second wireless communications devices according to first communication parameters that govern a communications link between the first and second communications devices;
• the first wireless communications device authenticating the second wireless communications device according to the authentication information;
• and
• after the step of authenticating, the first and second wireless communications devices exchanging information according to second communication parameters for the communications link.