Seeing sketchy rumors that iPhone 8 may have an iris scanner like the Samsung Galaxy Note 7. I'm still having a hard time seeing how that it better than a fingerprint scanner under the touch screen.

But to Samsung's credit, the most interesting part of having both a fingerprint scanner and an iris scanner is the software aspect — two tiers of security and authentication. Works great for parents who need to protect access to certain data while giving their kids freedom to play games.

A more Apple solution would be to simply let different fingerprints unlock different things instead.