Badge reader using infrared light

A badge reader which uses infrared light employs circuitry for determining whether portions of the identification badge are relatively opaque or transparent to infrared radiation upon insertion of the badge into the badge reader. The circuitry includes a source of infrared radiation, such as an infr...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ALBERT, GORDON H, FEINMAN, HARVEY M
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING HANDLING RECORD CARRIERS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS
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