Which smart lock for kids, guests and cleaners?

Start with who needs to get in

List everyone who will need access: children, a dog walker, a cleaner, a house sitter, family, a contractor. For each person, decide when they may enter and whether you want to know. That list tells you which features to buy. A lock that handles one household member is easy. A lock that handles ten people with different hours needs scheduling, individual codes and a log.

Features that matter

• Individual codes with names. The log shows “Dog walker 2:10 pm”, not just “code used”.
• Scheduling. A weekly window so a cleaner’s code works only on Tuesday morning.
• Auto-lock. Locks again after 30 seconds to a few minutes. This is the feature that matters for kids who forget.
• Remote code management. Requires Wi-Fi, a bridge, or a hub. A Bluetooth-only lock lets you edit codes only when you are near the door. See Bluetooth vs Wi-Fi smart locks.
• A physical key or a 9-volt emergency terminal. For dead batteries, and for people who do not use the app.

Keypad or fingerprint?

Keypads are cheap, work with gloves or wet hands and let you share a code in seconds. Fingerprint readers are quick for adults but can fail with wet, dry or small fingers and carry privacy concerns: the FTC has warned about misuse of biometric information. Many households use both, with a keypad for guests. See keypad vs fingerprint smart locks.

Safety and code rules

An exterior door must open from the inside without a key, special knowledge or effort. The International Residential Code requires it for the required egress door, so choose a lock with a thumb-turn on the inside. Avoid double-cylinder deadbolts on a door where kids could be trapped in an emergency. Teach children where the thumb-turn is.

Keeping control of codes

1. Give every person a different code. Never share one code with a group.
2. Use four digits at minimum, preferably six; avoid birthdays and “1234”.
3. Review the code list every few months and delete any you no longer need.
4. Turn on two-factor sign-in for the lock account, as CISA recommends.
5. Test the lock with the door open before closing it, so you never lock yourself out.

When a smart lock is not the right fit

If you rent, check your lease before replacing a lock and read smart lock for renters. For a hosted rental, the needs are different, see short-term rental setup. Check that the lock fits your door with the door fit guide.

Common household situations

• A child comes home before you. Give the child a personal code and turn on the “arrival” notification. Auto-lock closes the door behind them if they forget.
• A teen loses a phone. A keypad code still works. If the lock depends on the phone, make sure there is a code or key as backup.
• A cleaner stops working for you. Delete the code the same day. With scheduled codes you do not need to retrieve a key.
• A relationship or roommate situation ends. Remove that person’s code, phone access and account sharing, and change the keypad master code. This is far easier than rekeying every cylinder.
• Guests for a weekend. Create a temporary code with start and end times instead of lending a key.

How many users the lock really needs

Count permanent users (adults, teens, grandparents) and add one slot for each recurring service person and a few spare slots for guests. If the total is more than 30, check the lock’s spec sheet for its code limit. A lock with 100 slots and no scheduling is less useful than a lock with 30 slots and weekly schedules.

Privacy and notifications

Activity logs record when each code is used. Tell the people who use codes that the log exists. Turn off alerts you do not need, because a flood of “door unlocked” messages teaches you to ignore them. Choose a lock that lets you set the alert only for specific users, such as a child’s code, a guest code, or any entry while the house is set to “away”.

Mistakes to avoid

• One shared code for everyone. You cannot tell who entered and deleting it locks everyone out.
• An easy code like 1234 or a street number.
• Never testing the emergency battery terminals before you need them.
• Choosing a lock before measuring the door; check the door fit guide.