Every pay phone in the world was tapped. Or if it wasn’t, some crew somewhere just hadn’t gotten around to it. The taps fed electronically onto storage reels at a central point, and about once every second day a printout was obtained by an officer who listened to many phones without having to leave his office. He merely rang up the storage drums and, on signal, they played back, skipping all dead tape. Most calls were harmless. The officer could identify ones that weren’t fairly readily. That was his skill. That was what he got paid for. Some officers were better at it than others.
Probably seemed improbable at the time.
