ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,159, issued on Feb. 24, was assigned to Comcast Cable Communications LLC (Philadelphia).

"Localizing and verifying utterances by audio fingerprinting" was invented by Michael Chen (Wallingford, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems are disclosed for enhancing the security of a user device such as a voice command device. A computing device associated with the user device may be configured to receive an indication of a trigger, such as a predetermined word or passcode. In response to receiving the indication of the trigger, the computing device may be configured to determine a verification signal marker and to cause tr...