ALEXANDRIA, Va., April 9 -- United States Patent no. 12,273,469, issued on April 8, was assigned to TTP Plc (Hertfordshire, Great Britain).
"Physically unclonable function device" was invented by Edward Leigh Bean (Sawston, Great Britain) and Sergey Gaishun (Royston, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A physically unclonable function (PUF) device comprises a plurality of conductors, at least some of which are arranged so that they interact electrically and/or magnetically with one another. A media surrounds at least a portion of each of the conductors, and circuitry applys an electrical challenge signal to at least one of the conductors and for receiving an electrical output from at...