Iris scanner
Note I have the S8 but the plus (but that will change at lunchtime).
Either way I find the iris scanner near flawless. Yes it's a bugger to register but after that I've found it works very well 95% of the time and that includes when I'm wearing both contacts and glasses where the lenses have a heavy anti reflective coating.
It is every working very well in very low light, again when wearing the same glasses.
Honestly I'm pretty astonished how well it does work given the negative reviews on this aspect.
With regards to Bixby I've just never set it up and the phone's not nagged me to.
Biting the hand that feeds IT
