If apple introduces horizontal face I.D. with iOS 12 (as rumored), will the current iPhone X be capable of this feature, or will it only be capable with newer devices with updated hardware (i.e. 2nd generation TrueDepth camera systems)? Also, are software updates alone a viable means in which to improve Face I.D. overall (speed, accuracy, etc.) or is this accomplished solely/mostly with hardware updates? Thanks for your opinions!