Lexmark patents magnetic anti-counterfeit particles
Posted on Securing Industry
"Printer giant Lexmark has been awarded a US patent on a means of uncovering counterfeit ink and toner products.
The Chinese-owned corporation based in the US says that counterfeit printer supplies such as toner bottles are a problem for consumers as they may perform poorly and damage printers, noting that printer manufacturers are already using authentication systems to deter the fakers.
The patent draws on a concept developed by cryptographers known as physical unclonable function (PUF) pit simply a physical entity - embodied in a physical structure that is easy to evaluate but hard to predict or replicate. In the case of this patent the PUF is created using a mixture of magnetic and non-magnetic particles, creating a motif that can be detected using a low-cost reader.
The abstract of the patent appears below:
Physical unclonable functions having magnetic and non-magnetic particles
" . . . [Read More at SecuringIndustry.com