Like Apple, OnePlus had to remove the home button and fingerprint sensor from the OnePlus 5T’s front side in order to enlarge the display. Unlike Apple, OnePlus decided to keep the fingerprint scanner, which is now on the back of the phone.
The OnePlus 5T can also be unlocked with a new Face Unlock feature, which I found to be incredibly fast. It isn’t nearly as secure as Face ID on the iPhone though, since it only uses the phone’s standard front-facing camera. OnePlus knows this, which is why facial recognition cannot be used to authenticate payments or unlock secure apps.