Postage Stamp Chat Board & Stamp Bulletin Board Forum
 

Sweat Box:

http://www.glassinesurfer.com/stamp_col ... tbox.shtml

Steve..

Scrambled Indicia® is Graphic Security Systems Corporation's patented pre-press process that scrambles, distorts, intertwines, overlaps or otherwise manipulates images making encoded information on them unreadable by the naked eye, and non-copyable by current color copiers and digital scanners. When printed, the images are decoded through a simple decoder lens allowing the viewer to see the encoded images. Used on certain U.S. stamps. See: Hidden Image

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Best regards,
Marko
http://www.hiddenimagestamps.info/

STAMP DECODER

The U.S. Postal Service's STAMP DECODER(tm) is a decoder lens manufactured especially for reading hidden images and symbols on selected stamp issues. The decoder lens is a precision optical device manufactured with the same acrylics used for prescription eyeglass lenses. Each decoder is comprised of nearly a thousand tiny elongated lenses called lenticules. See: Hidden Image

_________________
Best regards,
Marko
http://www.hiddenimagestamps.info/