Optical lock

A UK inventor has come up with a way to make what is thought to be an unpickable lock. Based on a clever mixture of optics and electronics.
Rice says that the only way someone could pick the lock is to duplicate the key. “You could potentially have as many different points as you want on the lock barrel as inputs and outputs,” he explained. “Because it is a 3D pathway you are dealing with, you have potentially billions or trillions of combinations depending on how the lock is made. The probability of duplicating the path is very small.”
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