1) It only works on badly designed locks. Most tubular locks require more than a 1/4 turn to unlock, meaning they have to be picked a few times, whereas cheaper ones, and badly designed ones, such as kryptonite ones, can be pick with less than a 1/4 turn.
2)
www.lockpicks.com. Buy a tubular pic, and / or a lock pick set and MOST locks will be rendered 'worthless'. The locks the city government here uses to lock their bridges can be opened with a paperclip..