If you use a lock that is not TSA-approved on your checked luggage, you run the high risk of having it forcibly cut off by security agents. In 2026, the Transportation Security Administration (TSA) screens every piece of checked baggage, and if a bag triggers a secondary inspection, agents must be able to open it. TSA-approved locks (often marked with the "Red Diamond" Travel Sentry logo) allow agents to use a master bypass key to open the lock, inspect the contents, and then re-secure the bag without any damage. If an ordinary padlock or an unapproved integrated lock is present, agents are legally authorized to use bolt cutters or saws to gain access. This not only destroys your lock but can often damage the zippers or the luggage casing itself. Furthermore, if your lock is destroyed, your belongings will remain unsecured for the remainder of the transit, increasing the risk of theft or accidental spills. It is always recommended to use an approved lock or leave the bag unlocked if an approved version is unavailable.