[Adirael]

They're very difficult to pick but not impossible. It can be done but it takes time and expertise.

[nodata]

Is it more difficult because the locks are less common?

[sampo]

Says Wikipedia: "Picking the lock is not impossible, but requires a lot of time, a dedicated, professionally made tool and special expertise."

[nodata]

Thanks, I can read Wikipedia. The point is that picking a tumbler lock requires those things too.

[jjoonathan]

So does a half decent pin-tumbler lock.