bro fingerprint scanner is hardware first of all the fingerprint algorithm can be improved but the hardware will still remain the same . and for the face unlock Samsung is notorious for the face unlock.
Samsung should have given the iris scanner. the iris scanner of Samsung is best to use and it is convenient to use it also . only to achieve full screen the removed the iris scanner which tech reviewer says that the iris scanner is bad and worst for no reason . that is why Samsung removed the scanner other wise I am using the iris scanner in my s9 . and you know what the iris scanner performs well in all environments. plus it is working perfectly in sun lights( but only thing is that it works slow in outdoor lighting) but anyways it works in all environments.
