Come to think of it some of my luggage also has locks that secure the zippers in place. Similar to this photo: http://www.airlineintl.com/files/15/products1598

Come to think of it some of my luggage also has locks that secure the zippers in place. Similar to this photo: http://www.airlineintl.com/files/15/products15988.jpg http://www.airlineintl.com/files/15/products15988.jpg This would also hinder this method of opening a bag.