Quote Originally Posted by oldlock View Post
It usually requires the action of the key to remove the cover.

Without a key one must either pick the lock (not easy) or damage the plastic cover.
Quote Originally Posted by wylk View Post
The article goes into this a little, the case cannot be removed unless the lock is open.
Yep I have the keys, I just had a couple of difficult/ sticky ones for some reason - I managed to wiggle the cover of one of them earlier today.