Each Travel Sentry Approved Combination Lock has a special identification mark alerting the TSA that they can open it. without destroying it. if a checked baggage inspection is necessary Each Combination lock has a special TSA code Each TSA screening location is able to use this code & secured tools to open the Key lock & then relock it after inspection If the TSA searches your bag, a red ring will appear indicating that your bag has been inspected Produced by Wenger the company known for the Swiss Army Knife.