The most comprehensive instrument available on the market for the detection of counterfeit bills, credit cards and traveler's checks.  Helps detect counterfeits among these items using one or more of five different methods: chemical, magnetism, magnifying, UV, fluorescence, watermark.

Amazing!!!  Completely inkless.  Leaves absolutely no color on fingers.  

Fingerprint only shows on special labels (fingerprint turns permanent black).  Invisible on fingers and everything else.  Labels are not removable from checks or other paper without significant damage to the check.