Wafer locks are a type of locking mechanism commonly used in doors and cabinets. They operate using a series of flat, rectangular pieces called wafers, which align with the key's unique cuts when inserted. When the correct key is turned, the wafers move into the correct position, allowing the lock to open. These locks are often found in residential and commercial settings due to their simplicity and cost-effectiveness. While they provide a basic level of security, wafer locks can be vulnerable to picking and bumping, making them less secure than more advanced locking systems like deadbolts.