One identity. Every possibility.
Signature is Authority One's shared account and sign-in service. Use the same account across participating apps, including Mnemonic and Reflections, and manage your linked sign-in methods and password from your account page. Each app manages its own access rules.
You can sign in with Google or email and password. When you choose Google, Signature uses your email address and basic profile information to identify and authenticate your account.
Your stories, notes, and other product content stay with the app where you create them. Read our Privacy Policy for how account information is handled, or our Terms of Service for using Signature.