ALEXANDRIA, Va., July 3 -- United States Patent no. 12,349,068, issued on July 1, was assigned to The Regents of the University of California (Oakland, Calif.).

"Low power Wi-Fi backscatter communication" was invented by Po-Han Wang (La Jolla, Calif.), Patrick Mercier (La Jolla, Calif.) and Dinesh Bharadia (La Jolla, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for communicating directly with commodity Wi-Fi transceivers (TRXs) via backscatter modulation in an integrated tag device is provided. The method includes sensing an incident Wi-Fi? compliant wake-up signal. The method than reflects the incident Wi-Fi-complaint wake-up signal by encoding data from the tag device such that the reflec...