Credential management

Securely store and retrieve username/password credentials.
The Blockstore API lets apps save user credentials without the complexity or security risk associated with saving user passwords.
Android Blockstore
Programmatically save and retrieve credentials, and automatically sign users in across devices and websites with Smart Lock for Passwords.
Android Smart Lock Digital Asset Links Case Studies
Enable forms on apps to use the device's autofill utilities.
Android autofill framework
Enable forms on web pages to use the browser's autofill utilities.
Web autocomplete