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Anti-forgery
Today, the best forgeries of certificates in its entirety
are still produced by redrawing the original certificates,
often conducted by hand by skilled artwork specialists.
The resulting work is often impossible to authenticate
without careful study by experienced personnel and the
use of specialized equipment.
However, because Trustcopy's watermarks are embedded
with covert and encrypted authenticity information, which
are not revealed to the naked eye, the technique of
redrawing the certificates so preferred by forgers will
not reproduce the embedded covert information.
So a seemingly visually authentic certificate forged
by redrawing can be easily authenticated when by establishing
presence of the authenticity information in the watermark.
This forces the forgeries to be made using scanning
where a new photo film or scanning is used to capture
the original watermark. However there is always degradation
of image quality using this technique. And this with
micro printing adds to another security feature, reproduced
Trustcopy watermarks are always of different, making
them copy evident.
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