From a 1961 British Pathe newsreel called "Beat The Bandit", a remarkable anti-theft system for a briefcase:
As the man runs off with the case three telescopic poles spring out of it making the case impossible to manage, as well as crushing the man's hand pressing it into the handle of the case. It then has to be unlocked and deactivated 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.