 How SecuSystem
Works
Authentication of a SecuSystem requires that a match be obtained between
the feature's signature, as measured by the reader, and the vision of an
authentic signature which is stored in the reader's memory. Measurement of a
SecuSystem results in the registration of a series of numbers in the
reader's memory. These numbers are characteristic of the printed feature.
The microprocessor in the reader compares these numbers with a series of
preset number in its memory. The microprocessor is programmed to identify a
measurement as 'good' (representing an authentic signature) if all the
measured numbers match the stored numbers to within a limit chosen to allow
for slight irreproducibility in printing and use under a wide variety of
conditions.
The limits are made as narrow as possible in order to make it exceedingly
difficult for a counterfeiter to simulate the signature by mixing arbitrary
compounds or by not reproducing with very high precision the exact recipe
(compounds and preparation methods) used in preparing legitimate SecuSystem
prints, even if he should discover the crucial compound or compounds in the
ink used.
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