Smart Locks: Wi-Fi, Bluetooth, and the Connected Door
Smart locks add radios, motors, and firmware to the door — letting users lock or unlock with phones, codes, or voice assistants. Brands like August, Yale Assure, Schlage Encode, and Kwikset Halo bridge mechanical bolts with Bluetooth, Wi-Fi, or Z-Wave networks.
They are convenience products as much as security products: remote guest access and delivery codes matter to homeowners; audit logs matter to small businesses.
Core Components
Most retrofit kits drive a motor that turns an existing thumb turn. Integrated smart deadbolts replace the entire lock body. Power comes from AA batteries or removable packs; some wire to doorbell transformers.
Connectivity Options
Bluetooth locks pair locally for low power. Wi-Fi models phone home without a hub but drain batteries faster. Z-Wave and Zigbee integrate with home automation panels.
Security Considerations
Threats shift from picking to account takeover, firmware bugs, and relay attacks on Bluetooth. Users should enable MFA on lock apps, update firmware, and understand what happens when cloud services shut down.
Mechanical Fallback
Quality smart locks retain a physical key override for battery failure. Locksmiths should verify cylinder quality — smart features do not excuse weak pin tumblers.
Future Direction
Matter standard adoption may simplify cross-brand integration. UL and BHMA are extending ratings to electronic durability and cyber resilience alongside traditional force tests.