US Patent Issued to AT&T Intellectual Property I on June 30 for "Multi-factor autonomous SIM lock" (Washington Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,672,002, issued on June 30, was assigned to AT&T Intellectual Property I LP (Atlanta).

"Multi-factor autonomous SIM lock" was invented by Ginger Chien (Bellevue, Wash.) and Richard Zaffino (Kirkland, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the subject disclosure may include, for example, initializing a secure timer in a wireless device, determining whether a subscriber identification module (SIM) card installed in the wireless device comprises a carrier identity that matches a carrier identity stored in the machine-readable medium, establishing a network connection with a trusted server, starting the secure timer if the SIM card ...