@Catherine2341
Before you go for this, make sure you check your home insurance requirements. When I had to change a lock a couple of years ago (after a guest broke it), I asked the locksmith RE keyless entry systems and also lock boxes. He told me to check my insurance, because in most cases the policies have quite strict criteria about what you can and can't have in order to still be covered. There is a particular British Standard applied to certain locks and most insurance companies will only cover you if you have one of those.