Photocopying – Projection printing and copying cameras – Identifying – composing – or selecting
Patent
1979-04-04
1980-09-16
Griffin, Donald A.
Photocopying
Projection printing and copying cameras
Identifying, composing, or selecting
40 22, 358226, H04N 718, G03B 2752, G09F 302
Patent
active
042226627
ABSTRACT:
A photo I.D. card having the photograph, and/or signature, and/or coded indicia of an authorized holder which is visible under ordinary room illumination also carries a second photograph of the user. The second photograph is in the form of a transparency which is sandwiched between a piece of retroreflective material and an optical filter which is opaque to light of normal intensity and wavelength but which is transparent to infra-red or ultra-violet radiation. Also disclosed is apparatus for reading both the visible and invisible photographs, signature, and data on the card by means of a CCTV system. Any attempt to alter or forge the I.D. card can, thus, be readily detected.
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Griffin Donald A.
Visual Methods, Inc.
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