Registers – Record controlled calculators
Patent
1976-03-05
1978-07-25
Cook, Daryl W.
Registers
Record controlled calculators
235454, 235487, G06K 500, G06K 714, G06K 1906
Patent
active
041031504
ABSTRACT:
Apparatus for the control of admission to an establishment includes a suitable, coded entry card and a device for reading the card and providing entry when appropriate. The card includes a first region having machine-readable information encoded thereon prior to issue. The device contains at least one reader and an electronic control mechanism for examining the information read and for providing entry if the information read coincides with a preset comparison value. A further region is preferably included on the card with a value field to be cancelled. The device then contains a second reader to determine the validity of the value field. The second reader preferably functions by use of a light source and sensor. Thermographic material may be included on the card containing the cancellable value field and the device then contains a canceller.
REFERENCES:
patent: 2704634 (1955-03-01), Rauch
patent: 2735617 (1956-02-01), Knutsen
patent: 3558859 (1971-01-01), Dilsner et al.
patent: 3737628 (1973-06-01), Azure, Jr.
patent: 3829661 (1974-08-01), Silverman et al.
patent: 3926021 (1975-12-01), Genest et al.
patent: 3984658 (1976-10-01), Cannon
Cook Daryl W.
Guhl & Scheibler AG
LandOfFree
Arrangement for controlling the access to an establishment and e does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement for controlling the access to an establishment and e, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for controlling the access to an establishment and e will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1422994