It seems our fingers have gotten thinner, or more skillful at tapping at relatively tinier buttons now. Look at how huge those buttons are.

I am aware screen size has increased tremendously, even then I think the buttons were still quite huge compared to the size of today's tappable links.

The models detecting touch has become better and the touch grid has become both higher resolution and more reliable.

Being able to detect the middle-point of a fat finger wasn't a 1.0 feature

> It seems our fingers have gotten thinner

Of course not. It's actually way simpler: smartphones became taller and heavier and you no longer can use it with one hand anymore even if you are 2m tall man. So the main mode of interaction changed to a two-hand mode and one-hand is relegated for the doom scrolling, selfies and quick replies.

Hell, my Moto has a special one-handed mode!

>> Use one-handed mode

>> Want to use one thumb to navigate your phone? Turn on One-handed mode.

>> This mode is only available if you're using Gesture navigation.

https://en-us.support.motorola.com/app/answers/detail/a_id/1...

Trivia game: try to guess to which smartphone these dimensions belongs to:

    115.2 mm   58.6 mm   9.3  mm  137 g
    130.7 mm   68.9 mm   8.99 mm  145 g
    146.7 mm   71.5 mm   7.4  mm  162 g
    163.0    × 77.6    × 8.25 mm  227 g