ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,430,626, issued on Sept. 30.

"Radio frequency identification (RFID) self-checkout (SCO) station having a variable aperture for a selectively sized scan zone" was invented by Timothy W. Crockett (Raleigh, N.C.), Brad M. Johnson (Raleigh, N.C.), David John Steiner (Durham, N.C.) and Kimberly Wood (Raleigh, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A Radio Frequency Identification (RFID) enabled Self-Checkout (SCO) station includes an RF antenna that emits RF energy, such as RFID interrogation signals, through the variable apertures of one or more aperture layers into a scan zone. The size of the scan zone is selectively varied by electrically m...