ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,557,993, issued on Feb. 24, was assigned to Apple Inc. (Cupertino, Calif.).

"Temperature detection" was invented by Grant H Mulliken (Sunnyvale, Calif.), Cameron A Harder (Sunnyvale, Calif.), Fletcher R Rothkopf (Los Altos, Calif.), Izzet B Yildiz (Sunnyvale, Calif.) and Nicholas C Soldner (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatus for measuring biometric data including temperature in head-mounted devices (HMDs). Thermal sensors may also be integrated into the HMD and used to collect thermal data from the surface of the user's face. This thermal data may, for example, be processed to determine core body tempe...