TSA Lock
If you travel to the US, you will have to take care of the Transportation Security Administration (TSA) restrictions. For security searches, you should not lock your luggage, except it is equipped with the special TSA lock. The TSA staff will be then able to open and close the suitcase with a master key (the owner of the baggage does not possess any key). Thanks to this TSA lock, your suitcase will not have to be forced.