Question

Why sticky keys and sound tabs are used

Answer 1

It serializes keystrokes instead of pressing multiple keys at a time, allowing the user to press and release a modifier key, such as Shift, Ctrl, Alt, or the Windows key, and have it remain active until any other key is pressed.

Answer 2

Hola

The sticky keys are used as I it serializes keystrokes instead of pressing multiple keys at a time making the user do it's work easier.

However you can even stop it as it's sometimes pops out on the windows.