I've used the zip ties too. Not to prevent, but to see if someones been messing with the bag. When the TSA opens it up, they put a note in it and their seal on it. I've also used the large plastic bags over my suitcase too. I figure that the handlers are going to go after easier targets. But the bottom line is don't put anything in your bags you don't mind losing. <img src="/images/graemlins/frown.gif" alt="" />