One thing that irks my nerves is the fact that I have to do some epic stretches, when using my iPhone 6S with one hand, to hit those top navigation buttons within apps. The Smarteer is a screen protector looking to help those who share the same problem.
The glass screen protector has built in circuits leading to the top right and left corners of the iPhone's display. The top circuits lead to the right and left bezel at the bottom of the iPhone, next to the Home button.
Using the Smarteer is much like turning your iPhone into an Android phone, which usually have back and menu buttons near its Home button. Tapping on left side of the bottom bezel usually allows the user to navigate back within most applications. The left side of the bezel is mostly used to tap "compose", "send", and many other buttons found within apps.
The Smarteer is unique and seems like a neat little product to try out. Currently the screen protector is on sale at Amazon for $9.99 for the iPhone 6, iPhone 6 Plus, iPhone 6S, and iPhone 6S Plus.