Ramsey, well done! In effect then a mobile phone needs two distinctly separate forms of hardware-based identity (or ownership): 1. SIM module (implemented in all mobile phones by the service provider...e.g. Verizon) that secures the account holder's identity to the service provider establishing a authorized device relationship between the service provider and the mobile phone account holder. 2. MTM (mobile TPM) that permits the mobile phone account holder (e.g. a corporation) to take ownership of the device for the purpose of controlling internet-based access to their network (e.g. a VPN). In other words, only mobile phones properly credentialed with an MTM will be permitted to access the corporate VPN (VPN access is internet-based), identical in concept to establishing TPM-based ownership of a PC.