Fall of 1985, Memphis TN.
I met a guy named Bobby who worked at Sears, of all places, in loss prevention. Dude. The location was a little smaller than the Dillards in the Mall on McFarland. And by a little...10K+ SQ ft smaller. They had a dual-operated camera / monitor / video bank that looked like a TV production studio...and hand controlled joysticks following and recording people around the store. In the mid-80's that was "high tech."
As soon as a shoplifter left the store, crossed the threshold, it was on.