I'm sure the airport security folks would have a blast with you, but this is still a great idea. The frustration-free Travel Security Belt is the traveler’s ‘insurance policy’ against a stolen or lost wallet. Fits cash and paper copies of your IDs.
This military style canvas belt with leather trim, based on WWII standard issue belt, has been made in collaboration with Taylor Kent & Co, specialists in English handmade canvas and leather belts and bags. Canvas Belt by Nigel Cabourn.