The scale of methods for signing into apps on Android Wear ranges from easiest (left) to most difficult (right). The easiest methods for the user are to sign in with Google and getting credentials through the data layer. The more difficult sign-in methods for the user are signing in on a phone and on a watch.
Method 1: Sign in with Google
During setup, users may add Google accounts to their watches, allowing them to sign in with that account in your app.
Method 2: Get credentials through data layer
If the user is signed into your phone app, these identity credentials can be used to automatically sign them into your watch app.
Method 3: Open on phone
Sign-in and sign-up options may be displayed on the user’s phone.
Method 4: Type on watch
Users may type in their login credentials using the watch keyboard. This sign-in method should only be offered as a backup solution because it requires a lot of typing on a small screen.