Keyless entry replaces the key with a code, a fingerprint, a card or your phone. Done well it is more convenient and gives you a log of who came and went. Done badly it adds a weak lock and a dead-battery problem to your front door. This guide covers the types, what to check before buying and how to keep the lock secure. It is part of our smart home security guide.
Types of keyless lock
| Type | How you open it | Watch out for |
|---|---|---|
| Keypad deadbolt | A code on a keypad | Codes can be watched or shared; no remote unlock on basic models |
| Fingerprint (biometric) | A stored fingerprint, often with a keypad backup | Cold or wet fingers; keep a code or key backup |
| App or Bluetooth | Your phone, nearby or over Wi-Fi | Needs your phone; Bluetooth range limits and security settings matter |
| Wi-Fi smart lock | App from anywhere, plus codes | Depends on your network and the maker's account security |
Vivint's guide puts basic battery keypad deadbolts at about $50 to $100, mid-range Wi-Fi smart locks with touchscreens at $130 to $250, and premium fingerprint models at $300 to $400. Basic keypad locks only work in range, so they cannot unlock remotely.
Check the grade, not just the features
The American National Standards Institute (ANSI) grades deadbolts from 1 (highest) to 3. Vivint recommends Grade 1 or 2 for a front door. Techlicious notes that most smart locks are Grade 2. A lock is only as strong as the door and strike plate around it, so also follow our front door security guide.
Batteries and backups
- Batteries. Vivint says busy doors burn through batteries faster and suggests budgeting for replacement every six to nine months rather than yearly. Use the low-battery warning.
- Backup entry. Choose a model with a physical key or an external power port so a dead battery does not lock you out. Fully mechanical keypad locks need no electricity.
- Internet outages. Check which functions work offline; Choice Australia explains that smart locks differ in whether they need an internet connection.
Fingerprints and access codes
Give each person their own code or fingerprint so you can remove one without changing everyone's. Delete codes when a tenant, cleaner or guest no longer needs them. Never use birthdays or 1234. Biometric data is personal, so choose a maker that explains how templates are stored and keep the app account secure with two-factor sign-in; see how to secure smart home devices from hackers.
Working with voice assistants and alarms
- Allow voice control to lock, and require a PIN to unlock; see Alexa, Google Home and HomeKit security.
- Link the lock to routines such as arming the alarm; see alarm systems.
- Pair it with a doorbell or intercom; see video intercoms.
- Renters should check the lease; see home security for renters.
Keyless entry checklist
- ANSI Grade 1 or 2 deadbolt on a solid door with a reinforced strike.
- A physical key or external power backup.
- Individual codes, and old codes removed.
- Low-battery alerts on, and spare batteries on hand.
- App account protected with two-factor sign-in.
- Voice unlock off, or protected by a PIN.
Frequently asked questions
Are keyless locks safe?
They can be, if they are a good grade, installed on a strong door and used with unique codes and a protected account. The weakest part is often the door frame.
What happens if the battery dies?
You need a backup: a key, a keypad code on a lock that has power or an external power port. Replace batteries on a schedule.
Can I give guests temporary access?
Many smart locks allow temporary or scheduled codes. Check the app and delete them afterward.
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