In an obvious attempt to replicate Apple’s Face ID system, Samsung
has introduced a new combination face-scanning / iris-scanning
feature that can be used to unlock the phone instead of the
fingerprint scanner. It will use either the more-secure iris
scanner or the quicker-but-less-secure face scanner, depending on
the lighting conditions you’re in. However, it’s slow, blinks an
annoying red light when it activates the iris scanner, and never
feels as seamless as Face ID. Good thing the fingerprint scanner
is easier to use now.
Seifert’s review echoes David Pierce’s: the hardware is very good — great display, great camera, great performance — but all of Samsung’s software additions to Android are shitty gimmicks.