WiFi allows you to view the state of the lock/door (and even lock or unlock it away from home if required) using the associated app.interesting product. but why does it use Wi-Fi instead of Thread?
Thread is more local.
IF the lock hooks into HomeKit, you may get control via a HomeKit Hub (like Apple TV) but that requires the HomeKit connection to be bulletproof and see my post above.
Alternatively the lock has to connect to some associated hub (which then connects to WiFi, to tunnel to the app away from home) and then you've got the whole mess of how many fscking hubs do you want to buy? I have at least three of these things for different brands, and I absolutely refuse to buy another product that demands I also buy a new hub.