Digital Door Lock
Digital door lock works with HomeKit system, can control lock, unlock and view lock status through the home app, both iPhone, iPad, Mac, HomePod, Apple TV and Apple Watch.
You can use your iPhone or Apple Watch instead of a key card to unlock digital door locks with a tap (for supported models) and can trigger or check the lock status over the Internet when outside the home (works with Home hub).
Unlock your door with a home key on iPhone
Some lock makers provide the ability to unlock your door with a home key in Apple Wallet on your iPhone and Apple Watch (Series 4 and later). You add a home key to Apple Wallet with the Home app on your iPhone.
When you have a home key on your iPhone or Apple Watch, place your device near the lock to unlock it. You can use the Home app to share access with other people.
Setting up 'Home Key'
Add Home Key compatible lock to Home app
Select unlocking option
Express mode: Unlock the door just by holding your iPhone or Apple Watch near the lock.
Require Face ID or Passcode: Hold your device near the lock, then use Face ID or Touch ID to unlock it.
Choose automations such as Lock After Door Closes and Lock When Leaving Home.
If the lock you add supports HomeKit, all residents of your household receive the home key automatically.