The US Travel Security Agency (TSA) and Her Majesty's Revenues and Customs (HMRC) maintain the right to open any case, even if it is locked. This means that they can cut off your normal lock, destroying it forever. The Korjo Travel Sentry Lock solves this problem - you can now lock your case again without worrying that it will be destroyed by the TSA/HMRC. - Set your own combination (instructions enclosed). - Authorised TSA / HMRC agents can use a secured tool to open the lock, check your case and relock it (without ever learning your combination) The INDICATOR FUNCTION shows if the TSA / HMRC special tool has been used to open your lock: RED = Special tool used GREEN = Lock has not been opened by TSA / HMRC - Instructions for resetting the indicator are included.