German hacking group Chaos Computer Club hacks into Samsung’s iris-recognition system. The group used a camera, a printer, and a contact lens to bypass the system. Samsung claims iris authentication is one of the safest ways to keep your phone locked and the contents private. The CCC group also published a video showing how to defeat the iris scanner in a Samsung Galaxy S8 video. It is a reminder for people to always stick on strong passcode and device encryption to secure their devices.
Source: https://thehackernews.com/2017/05/samsung-galaxy-s8-iris-scanner.html