ALEXANDRIA, Va., March 3 -- United States Patent no. 12,567,419, issued on March 3, was assigned to GM Global Technology Operations LLC (Detroit).

"Voiceprint drift detection and update" was invented by Gaurav Talwar (Novi, Mich.), Alaa M. Khamis (Courtice, Canada), Xu Fang Zhao (LaSalle, Canada) and Kenneth R. Booker (Grosse Pointe Woods, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A voiceprint module for in-vehicle voiceprint drift detection. The module may be configured for determining an archived voiceprint for an operator of a vehicle, generating a first real-time voiceprint according to in-vehicle utterances of the operator made while operating the vehicle, generating a first voiceprint deviat...