Methods of Making Physical Unclonable Functions Having Magnetic Particles
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United States of America
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Aug 27, 2019
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Aug 27, 2019
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Abstract
A method of making a physical unclonable function (PUF) having magnetic and non-magnetic particles is disclosed. Measuring both magnetic field and image view makes the PUF difficult to counterfeit. PUF may be incorporated into a user-replaceable supply item for an imaging device. A PUF reader may be incorporated into an imaging device to read the PUF. Other methods are disclosed.
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