Irreversible metal film display

   
   

Display information is revealed from behind a metal film that can be cleared upon effective contact with a clearing agent. The metal film, while opaque, is generally less than 1000 Angstroms thick and can be cleared by exposure to innocuous agents including food or other household products.

 
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< Page marking device

< Form with integrated label or fold-over card intermediate

> Authentication system based on fingerprint and electronic device employed for the system

> Business card stock with peel off labels, and method

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