If your device supports biometric authentication, you can enable biometric login — Fingerprint or Face Unlock for Android, Touch ID or Face ID for Apple:
On Apple devices:
On Home, click on the profile icon on the top left corner.
Go to Privacy and Security.
Enable Use Touch or Face ID to log in.
On Android devices:
On Home, click on the profile icon on the top left corner.
Go to Privacy and Security.
Enable Use Fingerprint or Face Unlock to log in.
Auto-Lock security
You can also enable Auto-Lock security as an additional security measure. It'll ask you for biometric authentication after 2 or 10 minutes of inactivity (depending on your device).
On any device:
On Home, click on the profile icon on the top left corner.
Go to Privacy and Security.
Enable Auto-Lock security.