Optical Deterrent Technology
A technology using a patented security screen that discourages attempts to duplicate secure documents on copiers or scanners.
Like a void pantograph when photocopied, the word “VOID” appears.
Differing from the void pantograph in that ODT works effectively when copied by most any black and white copier, color copier or scanner.
It does not have to be used with a pantograph background, which allows for a cleaner looking document and better legibility on documents that are text intensive.