6 Ways to Lock Your Samsung Galaxy S9/S9+

The shape and patterns of your irises are unique to you. Using these distinct characteristics of your eyes to lock your device gives you an airtight security for your device.

Your iris data can also be used for various authentication purposes, for features such as Samsung Pass (Samsung account verification and web sign-in), Secure Folder and Samsung Pay (depending on the region and service provider). The iris sensor has been hidden in a hole on the upper bezel of your phone.
 

How to set up Iris Scanner on your Samsung Galaxy S9/S9+:

To delete the registered Iris, follow these steps:

Face recognition is one cool way to unlock the screen of your Galaxy S9. It's a fast and effortless method.

To use face recognition, just raise your phone as if you're taking a selfie. Make sure the camera lens is clean and you're in a well-lit area when using it. Face recognition is less secure than other screen lock methods such as iris scan, pattern, PIN and password. Your phone can be unlocked by someone who looks similar to you, such as a twin.

How to set up Face Recognition on your Samsung Galaxy S9:

To delete Face Recognition, follow these steps:

Galaxy S9's fingerprint sensor has moved beneath the rear camera, a more convenient spot that you can reach more easily and comfortably. Like your iris data, you can also use your fingerprint credentials to verify your identity on Samsung Pass, Secure Folder and Samsung Pay. You can register up to four fingerprints, in case you want to use multiple fingers for logging in.

How to set up Fingerprint Lock on Galaxy S9:

To delete Fingerprint Scanner, follow these steps:

Pattern Lock allows you to create a pattern to draw on the screen to unlock your device.

To set up Pattern Lock, go to the Settings > Lock screen and security > Screen Lock Type > Tap Pattern. Click on DONE, once the pattern is being set.

Passwords may be one of the oldest methods to secure a device's screen; it's guaranteed one of the safest. Create a password with a minimum of four digits but no more than 16 digits. For maximum security, choose a combination of letters and numbers.

To set up Password Lock, go to the Settings > Lock screen and security > Screen Lock Type > Tap Password. Click on DONE, once the password is being set.

Personal identification number, or PIN, is another secure method to lock a device. Your phone's PIN should be at least four digits.

To set up PIN Lock, go to the Settings > Lock screen and security > Screen Lock Type > Tap PIN