opticsorg writes "A UK inventor has come up with a way to make what is thought to be an unpickable lock. The Optilock contains a bundle of up to six input optical fibers on one side of the lock barrel and a corresponding number of fibers on the other side. When a special key is inserted into the lock, it connects the fibers in a unique routing pattern opening the lock in a fraction of a second. Light then flows around the circuit until the key is removed and the circuit is broken."
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