Link User Identities
Atlas Device SDK provides many authentication providers to log users into your app. Each provider has its own credentials that create a unique user identity. The SDK lets you merge multiple identities into a single user account.
User identities must be linked prior to logging a user in. Once the user is logged in, you cannot link the credential used to login to the user account. Also, you cannot link multiple email/password identities together.
Example
Consider an application that offers anonymous login, which allows users to explore the app without
registering. If a user wants to continue using the application, they can
create a permanent account with an authentication provider intended to
persist user data over a longer period, such as email/password authentication.
The SDK creates a new identity belonging to a new User object. The app can
then link the new identity with the current user.
Note
Depending on how you have configured email/password authentication, there may be additional steps (confirming the email address, for example) before the new account is created and can be linked.