Browse Prior Art Database

Infrared Transparent Credit Card

IP.com Disclosure Number: IPCOM000092586D
Original Publication Date: 1966-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Fant, WJ: AUTHOR [+3]

Abstract

Machine-readable card 10 can be used for credit or identification purposes.

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Infrared Transparent Credit Card

Machine-readable card 10 can be used for credit or identification purposes.

The desired coded information 18 is punched into thin strip 12 of material such as aluminized MYLAR* which is opaque to infrared IR radiation. Strip 12 is laminated between two pieces of plastic 14 and 16 such as polyvinyl chloride acetate. Pieces 14 and 16 are transparent to IR radiation but opaque to visible light. Information 18 is not apparent visually.

Source 20 of IR is placed on one side of card 10 and IR detector 22 on the other side. Detector 22 is moved along card 10 above strip 12 as shown by the arrow. The sequential output from detector 22 indicates the positions of holes
18. *Trademark of E. I. du Pont de Nemours and Co.

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