T.P.
I love "tot-lok" products. They are magnetized latches inside your cabinets. You use the strong magnet that comes with them to unlock them. It is hard to explain. You don't see anything on the outside. It is impossible to open them without the magnet (or some kind of destruction). They also won't show any damage on the outside if you choose to take them with you if you move out.
I hope that helps!!