Smart Home β FAQ
Can smart locks be hacked?
Any WiFi device has theoretical risk, but tested locks use AES encryption and two-factor authentication. Brute-force hacking would take years and trigger alerts. Physical lockpicking remains the bigger threatβsmart locks are typically harder to pick than traditional deadbolts.
What happens when the battery dies?
All tested locks include mechanical key overrides. Some have 9V battery terminals for emergency power. The eufy C220 and ULTRALOQ send low-battery warnings 2-3 weeks before failure. Replace batteries annually to avoid issues.
Will these work on my apartment door?
Most retrofit deadbolts work on standard 1-3/8" to 2" thick doors. Renters should choose models like Nuki that mount over existing locks without permanent modification. Always get landlord approval and provide a physical key copy.
Do I need to pay monthly fees?
None of our picks require subscriptions for basic features like remote unlock, guest codes, or activity logs. Some offer optional cloud storage for video integration, but core lock functionality is always free.
How reliable are fingerprint scanners in winter?
Cold, dry fingers can reduce accuracy by 15-20%. The eufy and ULTRALOQ scanners performed best in our freezer tests, maintaining 95% success rate. Register the same finger 2-3 times at different angles to improve cold-weather recognition.
Can I have multiple users with different access levels?
All tested locks support 50-100 users with unique codes or fingerprints. Admins can set schedules (e.g., dog walker only 2-4 PM) and receive notifications per user. The rental-ready model offers the most granular control for property managers.
