Rim Locks

Take your pick from

Wise advice, this is one of the few types of locks that can be opened by a so called 'skeleton' key which can be made in minutes and which will open any lock of that type.

Come to think of it, why not fit a decent hasp and staple with a padlock, generally unless it's a very substantial shed it's only a visual deterrant anyway.

There is no technical reason why a rim lock should be operable with just a skeleton key. I have certainly seen them with three levers, more if you include Yale rim locks. I wouldn't use one if it could be avoided as they are easy to access so can be cut/drilled easier than a mortise lock.

Nobody is going to use a skeleton key on a shed. The door is going to be unlocked in the first place, or the intruder will use brute force to gain access. Leave the rim lock and bolt a few planks on the door so that it looks as if you have taken security really seriously. Any intruder is going to whizz by, take a quick look and climb into your neighbours living room through their open window...