Knew someone years ago who had a health food store. He had problems with people stealing product. CCTV was just starting to become common place, but was still e

Knew someone years ago who had a health food store. He had problems with people stealing product. CCTV was just starting to become common place, but was still expensive. He found somewhere that would sell you a plastic camera body shell, with a red LED sticking out of the body that would flash periodically. It cost maybe $50, where a real one would have cost $1000+. His losses from theft dropped to close to 0.