Patent ID: 11951759
Assignee: LEXMARK INTERNATIONAL, INC.
Field: Other consumer goods (Other fields)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A method of simultaneously reading a location of a known element and a random element such the locations of the known element and the location of the random element are paired, thus tying the locations together, comprising:
providing a physical information layer (“PIL”) with a conducting material;
placing the PIL over a physical unclonable function element (“PUF”), where the PIL has a conducting material that is at least one order of magnitude larger than a pre-magnetized particle within the PUF, further wherein the PIL is constructed from a material that does not substantially alter a static magnetic field created by the pre-magnetized particles and a matrix dielectric material;
using a sensor to simultaneously detect the conducting material of the PIL and the pre-magnetized particles in the PUF, wherein the sensor distinguishes between the conducting material and the pre-magnetized particles, further wherein the PIL uses the conducting material locations as a point of reference when paired with the pre-magnetized particles in the PUF that orient an enrollment of a magnetic profile of the PUF; and
using the PIL to find a match in an enrolled database for the magnetic profile for verification against a unique random magnetic information.