Evidence the sterile package has not been opened.
Intelligent Material goes into the adhesive that seals the Tyvek lid of surgical packaging, at about 0.001%. A reader checks the seal and shows whether it has been disturbed.
That is a different question from "is this genuine?" It gives the operating room evidence that the seal has not been opened since it was made. It detects tampering; it does not test sterility, which still rests on the manufacturer's validated sterilization and packaging process. Readers are now being distributed to hospitals.


Inks and coatings
Plastics
Fibers
Labels and holograms