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"Our most popular products are ThermoSafe and TouchSafe, which use thermochromic and regular offset inks to hide messages on products like gift certificates and checks," Phillips noted.
She explained that when someone attempts to copy a Thermo-Safe document on a copier, a "Void" message appears. TouchSafe, on the other hand, is a verification seal, resembling a thumb print that allows instant interactive verification of an original certificate. On an authentic document, the word "Valid" would appear from behind the thumb print when touched and briskly rubbed, or breathed upon.
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