The discrimination system of the cryptic graph-text document and manufacturing
method thereof is to digitize and decompose the cryptic document and fix them onto
the surfaces of the digital reader and printed sheet, which present themselves
as the cryptic documents. An array of numerous miniaturized lenses with specific
focal lengths is distributed on the surface of the reader. When the printed sheet
is covered with a specific digital reader at a specific location, the corresponding
document is revealed and presents as the original document and alternating the
darkness of the pattern from heavy to light and from invisible to visible gradually
while changing the visual angle. Several digital readers are matched to one printed
sheet, resulting in different cryptic patterns accordingly. The discrimination
system is intuitive, simple and speedy, and is difficult to imitate. This technique
is good for making licenses, bills, money notes, stamps, packages of goods, and
all others that require anti-counterfeiting marks attached.