How to tie a Thief Knot

This video shows you how to tie a Thief Knot. This knot looks a Reef Knot to the casual observer and so can be used to determine if a thief is tampering with your belongings bag - secure it with a Thief Knot, and if you find it re-tied with a Reef Knot, you know someone has been messing with your stuff. This is used in sailing, boating, general use, camping and bondage.