ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,643, issued on Dec. 2, was assigned to Analog Devices International UnLtd. Co. (Limerick, Ireland).

"Resistor based physical unclonable function" was invented by Jonathan Ephraim David Hurwitz (Edinburgh, Great Britain) and Jose Bernardo Din (Biclatan, Philippines).

According to the abstract* released by the U.S. Patent & Trademark Office: "A Physical Unclonable Function, PUF, apparatus is disclosed. The apparatus comprises a plurality of PUF cells that each comprise a first potential divider and a second potential divider. The apparatus also comprises a determination unit that comprises a selection unit for selecting at least one of the plurality of PUF cells, and a readout unit ...