With the Kisi Apple Watch app, you can open doors without using your phone. To enable this feature, you will need to either download the app directly to your watch via the App Store or install Kisi in the Watch app on your phone (when paired with an Apple Watch).
When the Kisi icon appears on the watch, it means that the app is ready to be used. Once the app is opened, you will be able to see a list of your favorite doors, which you can tap to gain entry.
Currently, Tap to Unlock is not possible from the Apple Watch. Additionally, readers that have the Reader restriction enabled, will require you to have your phone nearby.