ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,393,906, issued on Aug. 19, was assigned to Position Imaging Inc. (Portsmouth, N.H.).

"System and method of object tracking using weight confirmation" was invented by Shahzad Farooq Kirmani (Scarborough, Maine) and Alex Seiger (Concord, N.H.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems for tracking an object comprise a horizontal surface upon which objects are to be placed, a weight sensor disposed on one side of the horizontal surface, and a processor in communication with the weight sensor. The processor is adapted to detect a change in weight measured by the weight sensor, to associate the detected weight change with an identifi...