Samsung may need several more years to replicate Apple's Face ID magic, but in the meantime, the Galaxy S9 should sport a beefed-up iris scanner.
Instead of using an ill-placed Touch ID fingerprint sensor, Apple's iPhone 8 could rely exclusively on facial recognition for biometric authentication.
Is the security of iris recognition technology on the Galaxy S8 an "issue"? Probably, although Samsung thinks a hack is difficult to happen in reality.
There's no such thing as an infallible, impenetrable biometric authentication system, at least not on the Samsung Galaxy S8.
You'll probably have to wait a few more years before securely authorizing mobile payments with your face, at least on Samsung devices.