Electronic surveillance and identification
WR Holland - US Patent 4,746,830, 1988 - Google Patents
BACKGROUND ART The electronic article surveillance (“EAS”) industry has been evolving
for several decades in attempts to deter and detect pilferage and shoplifting in libraries …
for several decades in attempts to deter and detect pilferage and shoplifting in libraries …
Electronic surveillance and identification
WR Holland - US Patent 4,746,830, 1988 - freepatentsonline.com
An electronic article surveillance and identification system employing a transceiver (10, 11)
for broadcasting an interrogation signal into a zone to track the location and movement …
for broadcasting an interrogation signal into a zone to track the location and movement …