'...In order to ensure the safe transportation of travelers, TSA screens all checked and carry-on baggage before it is permitted to be brought onboard commercial aircraft. Technology generally enables us to electronically screen bags without opening them, but there are times when we need to physically inspect a piece of luggage. TSA has worked with several companies to develop locks that can be opened by security officers using universal "master" keys so that the locks may not have to be cut. These locks are available at most airports and many travel stores nationwide. The packaging on the locks indicates whether they can be opened by TSA.
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Reference: tsa.gov
Tags: TSA approved locks