Use these options to control what content and features appear on your lock screen.
You can also control when your screen locks.
If you've set a pattern, PIN or password, you can control which notifications show on your lock screen.
Select whether or not to show notifications.
If you show notifications but hide sensitive content, then you'll receive notifications for incoming emails or chats, but they won't include message details.
To add your name or a short message to your lock screen for anyone who finds your phone:
Unlocking with the fingerprint sensor and setting up automatic unlocking make it easier to keep your phone secure and minimize when you need to enter your PIN, pattern, or password. But sometimes you need to trade convenience for more security. You can temporarily tighten locks and prevent lock screen notifications.
To set it up:

To use it:
Touch Lockdown.
Your fingerprint sensor and automatic unlock settings are disabled and notifications won’t be displayed on your lock screen.