Compared with standard locks, keyless locks are more convenient and secure. There are no physical keys to lose or would be thieves to copy. Nor is there an open keyway to pick from the outside. These ...

Can I install a keyed lock in my sliding patio door if it didn't come with one?Roger E., Katy, Texas You have two options: You can get a general retrofit kit from an outfit like Swisco.com (it bills ...

Single-cylinder deadbolts (keyed on one side) will work fine for most situations. Double-cylinder deadbolts (keyed on two sides) are a good idea if you have a window near the deadbolt. For safety ...