Abstract: The present invention pertains to a method and system for preventing unauthorized access via signal interception and hacking to a user's secure mobile device. One embodiment of the system further comprises an encryption server in communication with the secure mobile device, a clear server in communication with a clear mobile device, and a termination gateway in connection with secure and clear POTS phones on the PSTN. The termination gateway communicates with the clear and encryption servers by IP tunneling. The system enables universal access between secure and non-secure packet-switched phone lines, operating via the Internet, and clear and secure circuit-switched phone lines operating on the PSTN.