What is the Iris Scanning and how to use it on my Galaxy S9/S9+?

The iris recognition feature uses the unique characteristics of your irises, such as their shape and pattern, to strengthen the security of your device. Your iris data can be used for various authentication purposes. 

Registering my Iris for Iris recognition

Registering my Iris for Iris recognition Click to Expand

The device can save the iris data of one person only. You cannot register more than one set of irises.

1 Open ‘Settings’.
2 Tap 'Lock screen and security'.
Lock screen and security S9
3 Tap ‘Iris Scanner’ and set a pattern, PIN or password.
Iris scanner S9
Lock pattern screen S9
4 Read the disclaimer, the click ‘OK’.
5 Read the on-screen instructions and tap ‘Continue’.
Registering irises screen instructions
6 Hold your device 25~35cm away from your face with the screen facing towards you and look at the screen. Keep your eyes open fully and look at the top of the screen. Position your eyes inside the circles on the screen and open your eyes wide. The iris recognition camera will scan your irises.
Iris scanning position
7 When an iris unlock screen appears, tap ‘Turn on’ to use your irises to unlock the screen.
Activating Iris scanning

When you swipe in any direction on the locked screen, the iris recognition screen will appear.


If your irises are not recognized, unlock the device using the pattern, PIN, or password, and then re-register your irises.



If you change the screen lock method to Swipe or None, which are not secure, all your biometric data will be deleted. To use Samsung Pass or Pay, register your biometric data again.

Deleting registered irisesClick to Expand
1 On the Settings screen, tap ‘Lock screen and security’.
2 Tap the ‘Iris Scanner’.
3 Unlock the screen using the preset screen lock method.
4 Tap ‘Remove iris data’.
5 Tap ‘Remove’. Once the registered iris data has been deleted, all the related features will also be deactivated.

Are there any circumstances where Iris scan may not work properly?

Are there any circumstances where Iris scan may not work properly?Click to Expand

The iris scan may have trouble recognising the iris in some occasions:


When you are wearing strong prescription glasses, sunglasses, color contact lenses, or circular contact lenses.


If you have undergone laser-assisted vision correction surgery, such as LASIK or LASEK.


If the light sensor area is covered with screen accessories, such as a screen protector or stickers.


If there is dirt or debris on the iris camera, LED sensor.


If you are in strong sunlight or low-light, humid or wet environments.

Please note: If eyes are exposed to iris recognition within the distance of 2cm for more than 10 seconds, it might be harmful to your eyes. The Galaxy S9, will automatically stop iris recognition to protect your eyes if it detects an incorrect use of this feature. 

Thank you. Glad we were able to help. Your feedback helps us provide better support

Not finding what you're looking for? We're here to help.



Tweet us | 9am to 9pm, 7 days a week.

Facebook Messenger

We are here to chat | 9am-9pm, 7 days a week.

Monday to Sunday | 8am to 10pm
SmartThings Monday to Friday | 9am-5:30pm


We'll respond within 24 hours of your request.

Email Samsung Shop

For new and existing orders

Order Status & Tracking

Login to get an update on your Samsung Shop order

SmartThings Support

Help with Hubs, Kits, Sensor and Outlets

Track my repair

Check the status of your repair with Samsung


0330 726 7864General Support

Monday to Sunday | 8am to 10pm

B2B Support

Monday to Friday | 9am to 6pm

0330 726 7467Samsung Shop

For new and existing orders:
Monday to Sunday | 8am to 10pm

Calls to 0330 numbers cost no more than calls to geographic numbers (01 or 02).
Calls from landlines and mobiles are included in free call packages.
Call charges are subject to change and this information is provided as a reference only.
Calls maybe recorded for training and quality purposes.
For information on how we collect and use your details, please refer to our Privacy policy.

* For any printer related enquiries please visit the HP website.

Need a repair?

Contact Us