In one embodiment, a scheme is provided for porting a personalized indicium, i.e., a Personal Information Number or PIN, from a first mobile communications device to a second mobile communications device. Upon receiving identity information from the first mobile communications device via a secure peer-to-peer communication session, the second mobile communications device is operable to negotiate with a network node using at least a portion of the received identity information for reassigning the PIN to an identifier associated therewith. Upon successfully porting the PIN to the second mobile communications device, a service provisioning database is accordingly updated.