ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,484,847, issued on Dec. 2, was assigned to Apple Inc. (Cupertino, Calif.).
"Hydration measurement with a watch" was invented by Alexander W. Williams (Santa Clara, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Hydration measurement capabilities can be provided by a wearable electronic device, such as a watch, to allow a user to easily track hydration. A watch can be positioned to receive and measure one or more electrical properties of perspiration produced by the user wearing the watch. The watch provides electrodes for measuring the electrical properties of the perspiration. The electrical properties, such as electrical conductance, can represe...