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US 4,544,184 AGranted
Tamper-proof identification card and identification system
AssigneeFreund Precision, Inc.
InventorsRobert F. Freund, Daniel R. Valentine
Life of this patent
Estimating the term…
Abstract
A tamper-proof and wear resistant identification card having a support layer, a strip of magnetic tape for containing encoded information, transparent layers covering the front and rear surfaces of the support layer and a screen of optically-readable encoded information on a surface of one of the transparent layers.
Claims6
A tamper-proof and wear-resistant identification card comprising:
- a support member having a front surface and a rear surface;
- a recording means on one of said surfaces for storing encoded data;
- a first transparent layer overlying said front surface of said support member and having a first surface;
- a transparent bond layer attaching said first surface to said front surface of said support member;
- a second transparent layer overlying said rear surface of said support member and said recording means;
- a second transparent bond layer bonding said second transparent layer to said rear surface of said support member;
- and
- an invisible optically-readable code imprinted at the bond layer between one of said transparent layers and said support member.
5 more elements
In an identification card having
- a thin flexible self-sustaining support member having front and back surfaces,
- a magnetic recording stripe fixed to said back surface
- a code area on said support member bearing embossed indicia,
- a recessed area receiving a visually inspectable identification such as a photograph,
- a transparent cover and a transparent bond layer attaching said cover to one of said surfaces;
- the improvement comprising
- an invisible verification code located at said bond layer between said cover and said one surface,
- said verification code being detectable upon exposure to radiant energy of a predetermined wavelength and being destructable if the bond is disturbed.
5 more elements
Dependencies are inferred from the claim text.