What does the inside of a padlock look like?

The inside of a padlock typically contains a series of pins and springs arranged in a cylinder. When the correct key is inserted, the key's ridges align the pins at the shear line, allowing the lock to turn and open. Some padlocks may also feature a simple mechanism like a lever or a combination dial, but the basic principle involves manipulating internal components to release the locking mechanism. The interior is usually metallic, designed for durability and security.