Galaxy S9’s leaked code has recently went through a teardown; among the things found out during it, perhaps the most interesting was a feature called Intelligent Scan. This feature will supposedly allow Galaxy S9 to use both its iris scanner and facial recognition in the unlocking procedure, thus doubling the phone’s security measures (as well as cutting down on battery life, no doubt). It is unknown whether or not will Galaxy S9 allow to use the above security measures separately, although there are hints suggesting that it will. The iris scanner itself is said to receive an upgrade, though no details are available.
Intelligent Scan feature might be released for other Samsung smartphones along with their respective Android 8.0 Oreo upgrades. As for Galaxy S9/S9+, they will be released globally on March 16th.