ALEXANDRIA, Va., May 5 -- United States Patent no. 12,621,164, issued on May 5, was assigned to UNIVERSITY OF SOUTH FLORIDA (Tampa, Fla.).

"Systems and methods for authentication using antenna array geometries" was invented by Murat Karabacak (Tampa, Fla.), Berker Pekoz (Tampa, Fla.), Gokhan Mumcu (Tampa, Fla.) and Huseyin Arslan (Tampa, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In one embodiment, an authentication scheme (500) that combines chaotic antenna array geometries with pseudorandom pilot sequences and antenna array activation sequences is provided. A receiving device (110A) receives a pilot signal (130) from a transmitting device (110B) (501). The receiving device computes a unique signat...