公开(公告)号：US11416193B2

公开(公告)日：2022-08-16

申请号：US16822365

申请日：2020-03-18

Applicant: LEXMARK INTERNATIONAL, INC.

Inventor： Scott Richard Castle ,  Gary Allen Denton ,  Robert Henry Muyskens ,  Samuel Leo Rhodus ,  Brant Dennis Nystrom ,  Carl Edmond Sullivan

IPC: G06F3/12 ,  H04L9/32 ,  G03G15/22 ,  G03G21/00 ,  G06K15/10 ,  G03G15/00

Abstract: A physical unclonable function (“PUF”) object can be used to encode the geography or region in which device to which the PUF is attached may operate. Disclosed are two potential ways to regionalize a device using a PUF disk: placing the magnetic sensor at a different radius depending on the region or geography intended for sale; and altering the magnetic structure of the disk to magnetically encode the region into the sensor data.