ALEXANDRIA, Va., June 25 -- United States Patent no. 12,342,313, issued on June 24, was assigned to NEXRF CORP. (Reno, Nev.).

"Location positioning engine system and method" was invented by Michael A. Kerr (Reno, Nev.) and David Stewart (Stateline, Nev.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An indoor mapping system utilizing beacons is described. The system includes a premises map, a beacon disposed within the premises, a plurality of measured signal strengths, and a wireless device. The beacon location is layered on the map, and the measured signal strengths are captured from the beacon. The wireless device includes an indoor positioning module, and the wireless device receives a beacon signal when...