Is it required to have an Apple Home hub to use with an Apple watch to unlock?

An Apple Hub is not required to use our Encode Plus deadbolt, but advised if you wish to share Home keys with other users. To use an Apple watch, a Home key needs to be setup and Express mode turn on the phone and Watch app. 
Set up a Home key:
1.    Add a supported lock to the Home app.
2.    Choose an 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.
3.    Choose automations such as Lock After Door Closes and Lock When Leaving Home.
If the lock works with a home key, all residents of your household receive the home key automatically


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