This method explains how some older number locks can be vulnerable to simple tools like a strip of paper. Instead of breaking the lock, the idea is to feel tiny gaps or changes in tension between the wheels — something poorly made locks fail to hide. It’s a reminder of how mechanical weaknesses can be exposed using simple materials. Whether it works depends on the lock’s quality, how worn the mechanism is, and how sensitive the wheels are. Cheap locks are easier to manipulate, while modern ones

How to Use Number Lock - Step by Step