US Patent Issued to Amazon Technologies on Sept. 29 for "In-building localization using device radio frequency fingerprints" (California Inventor)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,750,813, issued on Sept. 29, was assigned to Amazon Technologies Inc. (Seattle).

"In-building localization using device radio frequency fingerprints" was invented by Jungtao Liu (Saratoga, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Radio frequency fingerprints may be received, for a plurality of computing devices, comprising indications of detected wireless access points and signal strengths of the detected wireless access points. Access point distances between a plurality of wireless access points may be computed based on the radio frequency fingerprints. One or more neighboring wireless access point pairs may be detected, based on the radi...