Why I don't use the Galaxy S9's iris or facial recognition features - SamMobile
So android 10 beta on s9/note 9 has updated the iris scanner to support the biometrics api and can be used for apps that were updated (aka apps that work on pixel
Samsung Galaxy S9 and S9 Plus Review - PhoneArena
Samsung Galaxy S9 may come with single rear camera, improved iris scanner - India Today
Galaxy S9/S9+: What's the basic principle of iris scanning? | Samsung Saudi Arabia
Samsung Galaxy S9 Review - SlashGear
Samsung Galaxy S9 will get a better, more secure iris scanner: Report