Door Locks

This lock has been so useful for my wife's office.  I love these because I don't have to worry about keys, or losing keys.  Just use your fingerprint to open the door, or, a code if you don't want to bother setting up the fingerprint.  It takes 4 AAA batteries and will notify you when they start getting low.  I find that it lasts for about 6-8 months before having to change them.