Sabotage monitoring of credit card reader - has built-in switch that is operated when object is inserted with timer used to measure time as means of indicating sabotage
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Reading device for reading non-stationary data storage means
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Optical arrangement on passive infrared motion detectors
DE3447074C1
Single-phase switching apparatus having a voltage supply for a movement signalling device
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Movement detector having a housing to be mounted on a wall
ATA468882A
Device for the automatic reading of check card or the like.
DE3247781A1
Device for automatic reading of credit cards or the like.
DE2809746A1
Anti-tampering construction for car licence plate - is assembly of fragile plate and sprung mounting bolts preventing alteration
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Abuse proof car number plate - uses brittle material to shatter during fixing so that particles drop out when remmeer removeddeeeed
