Just like with the Note 7, I found I'm using the Finger Print sensor on my S8+ about 75% less, due to the Iris sensor. Usually if I'm walking at a quick pace in public, I'll just use the FP to unlock. Also my password manager(Enpass) and some apps only have FP unlock option. But I do use the Iris to enter my secure folder. But if I'm walking slowly or stationary, I use the Iris the majority of the time to unlock. I use Smart Lock (bluetooth), with my car but not my smartwatch. Just curious to see if everyone's unlock method changed or remained the same for the majority of their usage with the S8/S8+.