What is the function of the MMI touch in the Audi A3?

I've noticed a touchpad above the gearshift in my Audi A3. What is the function of this touchpad and how can it be used?

The MMI touch in the Audi A3 is a multifunctional input device that allows you to control various functions of the vehicle, such as navigation, audio, and phone calls. Simply use your finger to swipe, zoom, and click on the touchpad to access different menus and options.

In addition to controlling the vehicle's functions, the MMI touch can also be used to write and input text, such as entering addresses into the navigation system. This feature is especially helpful for longer addresses or special characters that may be difficult to input using traditional buttons or knobs.