Controller script

Hi, is there anyone who would like to share some scripting skills…?
I’m looking for a 1st person controller/mouse look where an arrow or hand becomes visible only when center screen (where also the arrow/hand is placed) gets close to anything clickable (buttons etc).
Appreciate help of any kind!

Do a Raycast from the center of the screen.

http://unity3d.com/learn/tutorials/modules/beginner/physics/raycasting

Check the tag of the gameObject that the Raycast Hit.