Notice this euro cylinder slipped cam? The cam is the part in the middle of the lock which turns when the key is turned. When the key is in the right position to be removed, the cam should be roughly in the 5 or 7 O’ Clock position. As a result, the home owner couldn’t remove their key. I upgraded their security and supplied and fitted a new Ultion 3* Diamond cylinder backed by a £1000 Guarantee should entry be gained by lock snapping!