Hands On with the Samsung Galaxy S9 and S9+ (Phone Scoop)
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
How does the iris scanner work on Galaxy S9, Galaxy S9+, and Galaxy Note9? - The Official Samsung Galaxy Site
Galaxy S9+ review—Faster specs, better biometrics in a familiar package | Ars Technica
Galaxy S9 may combine iris scanner and face unlock for “Intelligent Scan” – Phandroid
Galaxy S9 iris scanner to rival Apple's Face ID | TechnoBuffalo
Why I don't use the Galaxy S9's iris or facial recognition features - SamMobile
This is How Samsung Galaxy S9's Enhanced Face Recognition Will Work