Method and system for shifting a communication session

A communication device comprising:

• at least one processor, and
• memory comprising executable instructions which, when executed by the at least one processor, cause the communication device to:
• read an identification tag signal comprising an identification indication of a target communication device, wherein the identification tag signal is read from an identification tag located in, on or at a short distance from the target communication device;
• send a discovery request to a registration service infrastructure, wherein the registration service infrastructure comprises a registration data repository in which shared network location information of the target communication device is stored, and wherein the discovery request comprises the identification indication of the target communication device and an encrypted communication device identifier;
• receive a discovery response from the registration service infrastructure, the discovery response comprising the shared network location information of the target communication device;
• apply a cryptographic function to the identification indication of the target communication device, thereby resulting in a calculated encrypted identification indication;
• compare the calculated encrypted identification indication to the encrypted communication device identifier;
• after a determination that the calculated encrypted identification indication is equivalent to the encrypted communication device identifier, send, to a home communication node of the communication device, a shift request for shifting a communication session from the communication device to the target communication device, wherein the communication session was established between the communication device and a remote communication device, wherein the home communication node handles all communication sessions for the communication device, and wherein the shift request comprises the shared network location information of the target communication device;
• and
• terminate the communication session with the remote communication device.

A registration service infrastructure comprising:

• at least one processor, a registration data repository comprising a plurality of communication device identifiers, each device identifier being stored in association with shared network location information of a respective communication device, and
• memory comprising executable instructions which, when executed by the at least one processor, cause the registration service infrastructure to:
• receive a discovery request from a requesting communication device, wherein the discovery request comprises a communication device identifier of a target communication device, wherein the communication device identifier is carried by an identification tag of the target communication device, and wherein the identification tag is located in, on or at a short distance from the target communication device;
• retrieve, from the registration data repository, shared network location information associated with the communication device identifier of the target communication device;
• apply a cryptographic function to the communication device identifier of the target communication device, thereby resulting in an encrypted communication device identifier of the target communication device;
• and
• send a discovery response to the requesting communication device, wherein the discovery response comprises the encrypted communication device identifier of the target communication device and the retrieved shared network location information, thereby enabling the requesting communication device to shift a communication session to the target communication device.