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knowledge martix on Instagram: "Unlocking a number lock shouldn't be this easy What looks like magic is actually pure mechanics. Inside every number lock, each wheel has a tiny groove called a gate. When all gates line up in the correct position, the internal locking bar drops into place and the lock opens. Normally, you only reach those gates by turning the correct code. But this technique works by sliding a piece of paper between the wheels and feeling for the subtle moment when the paper fall