You may use the Microsoft Touch Cover or Type Cover to pair with Surface RT/Pro tablet instead of touching. When you attach it and go to type something like email, you will hear the clicking sound you are making.
The buttons from the cover don’t like a normal keyboard’s. And the clicking sound let you feel like using actual buttons. However, somebody don’t like to hear the annoying sound.
How to Turn Off additional clicking Sound with Touch/Type Cover for Surface RT/Pro
* Move the mouse cursor from the right side to open charms bar, Click/Tap on “Change PC Settings” at the bottom.
* On the left, select General. Scroll down on the right side, under Touch Keyboard option, switch “Play key sounds as I type” from On to Off.
* You can also disable the feature from on-screen keyboard from Windows 8 computer. Click on the Options button, and uncheck “Use click sound”.