The touch panel as the next stage in the evolution of smartphones?

A curious note has appeared on the Super Fun Time Happy Blog, which offers an elegant solution to the "thumb problem", which is relevant for all touch devices. 

Our fingers are far from transparent. When performing various operations on modern smartphones, the thumb can cover up to 25% of the screen.

Moreover, the finger can hardly be called an accurate tool. Highlighting text on smartphones is quite a task.

It's more convenient to use a cursor for this, but who would agree to carry a mouse with a smartphone?

However, the problem with the mouse was successfully solved a long time ago on laptops.

Based on this decision, the blog suggested making the back of the smartphone interactive.

This way the cursor can be integrated into smartphones.

It will be more convenient to take a selfie (just double tap on the back of the device).

You can scroll without closing the screen.

Interaction with the touch screen and the touch panel at once opens up new possibilities for controlling the device (how do you like the ability to zoom in/out objects on the screen with one hand?).

And, of course, the presence of a touch panel on the back of the gadget will allow you to get rid of touch buttons and sticks in games.

And what do you think about such functionality? If, suddenly, major mobile device manufacturers integrate such functionality into their devices, how much will this change the mobile games market? 

The original: http://blog.assaflavie.com/touch/