Pacsafe’s Cut Resistant Wallet Strap is a nice addition if you like the idea of added security.
The TurnNLock security hook you can attach your wallet to a fixture, a bag or your belt. This systems fixes your wallet in two easy steps. Clip, Snap – secure. Made from Dyneema® Webbing, which is 15x stronger than steel, you can have the peace of mind that no one can slash your strap and make away with your wallet.