The TSA has the legal authority to inspect any piece of luggage, and if your bag is locked with a non-approved device, they will break or cut the lock to gain access. In 2026, the standard remains that you should only use TSA-approved locks (look for the red Travel Sentry diamond or Safe Skies logo). These locks can be opened by security agents using a universal master key, allowing them to inspect and then relock your bag without damage. If you use a standard padlock or a built-in lock that isn't TSA-compliant, agents will use bolt cutters to remove it, and they are not liable for the cost of the destroyed lock or any damage to the suitcase zippers. If your bag is inspected, you will find a "Notice of Baggage Inspection" inside. A popular alternative for 2026 is using heavy-duty zip ties, which are easily cut by agents and can be replaced by you at your final destination for a minimal cost.