ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,547,686, issued on Feb. 10, was assigned to Visa International Service Association (San Francisco).

"Mobile device secret protection system and method" was invented by Yuexi Chen (Foster City, Calif.) and Marc Kekicheff (Foster City, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An access device is disclosed. The access device includes a non-transitory computer readable medium that includes code for performing a method that includes receiving, from a user device, a digital certificate and a seed, and then encrypting the seed, and a first access device key with a public key from the digital certificate to form encrypted data. The method also incl...