ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,450,321, issued on Oct. 21, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Kanagawa-ken, Japan).

"Authentication system for electronic device" was invented by Shigeru Tamaki (Kanagawa, Japan), Kengo Akimoto (Kanagawa, Japan), Hiromichi Godo (Kanagawa, Japan), Koki Inoue (Kanagawa, Japan), Yoshitaka Dozen (Kanagawa, Japan) and Shunpei Yamazaki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An authentication system for an electronic device with a high security level is provided. The authentication system includes a data retention means that accumulates first data related to a state of the electronic device being used by a first user regi...