User, Identity and Authenticator
To fully configure and use Authgear, you need to understand 3 important concepts in Authgear's flexible yet powerful authentication system:
User
Identity
Authenticator
Combining identity and authenticators, Authgear can support a lot of different authentication needs such as, but not included to:
Simple email / username / phone sign in, with or without 2FA
Email or SMS Passwordless login
SSO login such as Google / Facebook etc
Phone sign in with Password as the 2nd factor like telegram or whatsapp
A lot more.
User
A user represents an entity who use your app, usually a person. Each user can have multiple identities.
Identity
Identities are the way users can identify themselves, such as username, email and phone. Identities could also came from an OAuth Provider such as Google/Facebook SSO, or Sign in with Apple.
Currently, Authgear support the following identity:
Email
Phone
Username
OAuth Provider:
Google
Facebook
Azure Active Directory
Linkedin
Sign in with Apple
Anonymous
Each identities have its configuration. For example email could be configured to block "+" or not, or if a username is case sensitive or not.
Email, Phone and Username identities automatically create the email
, phone_number
and preferred_username
claims. OAuth Provider might create a email
claim depends on if the user's email is provided.
Authenticator
Authenticators are the way a user with an identity can authenticate themselves, each user can multiple primary and secondary authenticators. If secondary are configured or required, a user need to authenticate itself against both to be signed in.
Currently Authgear support the following authenticators:
Primary Authenticators:
Password
One Time Passcode via Email or SMS (oob_otp)
Secondary Authenticators:
Password
TOTP (2FA token)
One Time Passcode via Email or SMS (oob_otp)
Secondary authentication could be optional (only if the user configured it) or required for all users.
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