Buying guide
How to choose a TSA-recognised lock
The word "TSA" printed on a listing is not the same as the official red-diamond marking that lets security agencies open a lock with a shared master tool — this guide is about telling the two apart before buying.
Look specifically for the red-diamond indicator in the listing photos, not just the word “TSA” in the title — a standard combination lock without that marking can still be cut off during a random inspection exactly like an ordinary padlock, which defeats the entire purpose of buying one.
Both locks below carry the genuine marking, confirmed on the packaging and listing. A 4-digit combination, as on the ZHEGE set, gives a wider range of possible codes than the more common 3-digit dial, a small but real security margin.
Questions people actually ask
What happens if my lock isn't actually TSA-recognised?
If a security agency needs to inspect the bag and the lock doesn't carry the real marking, it may simply be cut off rather than opened — exactly the outcome a genuinely TSA-recognised lock is designed to avoid.
Combination or key — which is more secure?
Neither is meaningfully more secure against a determined attempt, since both are designed to be openable by an official master tool. The practical difference is convenience: a combination lock has nothing to physically lose, while a key can be misplaced.