from the do-it-yourself-toll-gate dept.
MC68040 writes "The guy at this site managed to build something together that's actually quite neat in the way he built it, all hand-crafted system that uses a linux box to unlock his door. Maybe not the coolest of solutions, but actually a pretty good idea as for security in my humble opinion."
If you push the "extra ice" button on the soft drink vending machine, you won't
get any ice. If you push the "no ice" button, you'll get ice, but no cup.