Originally Posted by DangerM55

I could completely open a zipped back with even the most secure padlock on it, remove or add any item and then re-zip it within 10 seconds with no outward signs of tampering. There is zero point investing in a 'decent' lock for a bag... Nobody is going to 'guess' your code if they want to nick something out your bag, they're just going to use a pen to split the zip... Anyone who works at an airport knows this, especially if they're criminally minded! The only way to deter this is to lock your zips together and also lock them to a fixed loop at the end of the zipper/somewhere on the case (this prevents re-closing the zip, not opening it in the first place).