Appeal No. 2004-0227
Application 09/140,151
converted into pulses, the detected pulses are coordinated with
time pulses, the time pulses are converted to binary code, and
the binary code is compared with binary code previously
ascertained by these steps and stored (col. 2, lines 51-61). “If
just one of the tiny particles randomly present, is broken off or
is multiplied or slightly displaced, the random information
serving for identification purposes is changed and the document
can be identified as having been forged” (col. 5, line 66 -
col. 6, line 3).
Stockburger discloses a system and a method for
characterizing and identifying falsification-proof data supports,
such as value or identity cards, in which physical characterizing
features of the data support are measured and converted into
characterizing data which are recorded on the data support
(col. 1, lines 11-19). “[T]he data support is provided, at least
in the zone of a reading track, with an automatically readable
surface pattern the lines, areas or dots of which differ from one
data support to another by their width and/or density and/or
respective associations. The surface pattern is detected at
selected positions along a path of limited length or in punctual
manner, and at least some selected reading or detecting results
are used as the physical characterizing features of the data
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