If you find a new lock or a plastic security seal on your luggage in 2026, it is usually because the Transportation Security Administration (TSA) performed a physical inspection of your bag and your original lock was not "TSA-approved." If a bag triggers an alarm during the X-ray process and is locked with a standard padlock, agents are authorized to clip or break the lock to inspect the contents. After the inspection, they may secure the bag with a temporary "tamper-evident" plastic tie or, in some cases, relock it if you used a TSA-approved lock (which they can open with a master key). TSA agents are required to place a "Notice of Baggage Inspection" card inside your suitcase to inform you that the bag was opened. If you used a TSA-approved lock and it was still cut, it may have been due to a mechanical failure or the specific agent not having the correct master key on hand. To avoid this, always use a lock with the "Travel Sentry" red diamond logo, which ensures that security officers can access your bag without causing damage to your suitcase.