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In 1938, Modern Mechanix magazine ran an article on a new design for a fire-alarm box. It had an arm-hold trap built in that held the alarm-puller in place until the fire department arrived -- the idea was to lock prank-alarm-pullers in place (of course, if you were dumb enough to pull an alarm during a fire, you were horribly trapped alive in the flames until you succumbed to immolation or asphyxiation).
LinkTHE sending of false fire alarms by mischievous persons may be eliminated through use of a newly developed call box. To use the device, the sender of an alarm must pass a hand through a special compartment to reach the signal dial. Once the dial has been turned, the sender’s hand is locked in the compartment until released by a fireman or policeman with a key.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.