A smart lock rarely lives alone. It usually joins a hub, a doorbell, and whichever voice assistant the household already uses. Consequently the integration matters as much as the lock, and it is where most of the frustration comes from.
The protocol question
Locks talk over Bluetooth, Wi-Fi, Z-Wave, Zigbee or Thread, and they are not interchangeable. Consequently a lock that suits one household is useless in another. Furthermore, Bluetooth-only models work at the door but not remotely, which surprises people after purchase. Therefore establish what your hub speaks before choosing hardware.
What Matter changed
Matter is a cross-vendor standard intended to end exactly this problem. Consequently newer certified locks work across ecosystems. However, adoption is uneven, so check certification rather than assuming.
Battery life in a connected setup
A lock that maintains a constant Wi-Fi connection drains far faster than one waking only on use. Consequently many manufacturers use a separate bridge, leaving the lock on a low-power radio. Additionally cold weather compounds it. Therefore in Ottawa a bridge-based system generally outlasts a direct Wi-Fi one by a wide margin.
Voice control, honestly
Voice unlocking is usually disabled by default, and for good reason, since a voice carries through a door. Consequently most assistants allow locking by voice but require a PIN to unlock. Moreover that limitation is a feature rather than a shortcoming. Therefore treat voice as a convenience for locking and status checks.
What none of it changes
The bolt, the strike and the frame still determine whether the door survives force. Consequently a smart lock on a weak frame is a smart weak door. Therefore fit three-inch strike screws and a Grade 2 bolt first, then add the electronics. Above all, integration is about convenience rather than security.
Questions we get about this
Do I need a hub?
Depends on the protocol. Z-Wave and Zigbee locks need one; Wi-Fi models often do not.
What is Matter?
A cross-vendor standard so locks work across ecosystems. However, check certification.
Can I unlock by voice?
Usually only with a PIN, and often disabled by default. That is deliberate.
Does a smart lock improve security?
Not by itself. The bolt, strike and frame still decide that.
Which lasts longer on batteries?
Bridge-based systems, generally. Because the lock stays on a low-power radio.
