You can use up to three different methods to unlock your Galaxy S8 phone using nothing more than your body. The front-facing camera can scan and identify your face, or you can use the embedded iris scanner to read your eyes like a fingerprint. Oh, and of course there’s an oddly placed fingerprint sensor on the back of the phone.
All three work, and are fun to show off with to friends and family members. But which method(s) should you use, and which should you avoid?