Electronic article surveillance system incorporating an...

Details Electronic article surveillance system incorporating an... Electronic article surveillance system incorporating an...

G - Physics

08

B

340/124.3

G08B 13/24 (2006.01) G08B 29/18 (2006.01)

Patent

CA 2032945

Abstract of the Disclosure To reduce the occurrence of false alarms, the disclosed system incorporates an auxiliary sensor for detecting the presence of a shopper passing through the electronic article surveillance device, such that the device is operated continuously, and the auxiliary sensor is used to enable external alarms of the device only upon detecting the shopper's presence. Thus, while the device continuously monitors field-induced signals which are received, activation of the external alarm is permitted only when a shopper passes through the security device and is detected by the auxilliary sensor. Sounding of the alarm is then based upon an analysis of the data received at and just prior to the detected approach of the shopper to be monitored, eliminating phantom alarms while significantly reducing false alarms and merchandise-activated alarms.

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