Patent ID: 7805128

Claim:
A method comprising: receiving one or more identifier/geo-location pairs that are defined by a user U, wherein each of the identifiers is meaningful to said user U but does not indicate the associated geo-location to other users, and wherein said user U is associated with a wireless telecommunications terminal; receiving, after the receiving of said one or more identifier/geo-location pairs, a first signal that indicates that the current user of said wireless telecommunications terminal is to be authenticated; selecting, in response to said first signal, an identifier/geo-location pair I/L from said one or more identifier/geo-location pairs; presenting identifier I at said wireless telecommunications terminal at time t; and when the geo-location of said wireless telecommunications terminal is substantially the same as L at a time that exceeds t by no more than a positive threshold, storing in a memory a value that indicates that the current user of said wireless telecommunications terminal is authenticated for access to a telecommunications network.