Patent ID: 8452959

Claim:
A method of registering a wireless communications device with a presence system, the method comprising: negotiating a key with a registrar in order to establish an encrypted communications channel between the wireless communications device and the registrar via a proxy node; transmitting a token request over the encrypted communications channel from the wireless communications device to the registrar, the token request including an e-mail address associated with the wireless communications device; receiving at the wireless communications device (i) a token response from the registrar via the encrypted communications channel and (ii) an e-mail token from the registrar via a separate email channel using the e-mail address included in the token request, wherein the token response includes first security information and the e-mail token includes second security information; transmitting an authentication message from the wireless communication device to the registrar via the encrypted communications channel, the authentication message including a combination of the first and second security information; receiving at the wireless communication device via the encrypted communications channel an authentication acknowledgement from the registrar containing a universally unique identifier; and using the universally unique identifier for subsequently exchanging presence data between the wireless communications device and the presence system.