How to display a message when a gameobject is touched

Hello All,
Can anyone please help me with this??? How to display a message when a gameobject is touched?? I was stuck up with this

 

When touched? do you mean with a mouse? or with collision?

Click (attach this script to the game object):

Code (csharp):

1.  
2. var OverO = false;
3. function OnMouseOver () {
4. OverO = true;
5. if(Input.GetMouseButtonDown(0)  OverO){
6. print("hi");
7.     }
8. }
9. function OnMouseExit (){
10. OverO = false;
11. }
12.  

or with collision, easyiest way would be to use a trigger (attach this to a trigger(the trigger should be about the size of a collision box around the object)):

Code (csharp):

1.  
2. function OnTriggerEnter () {
3. print("hi");
4. }
5.  

but ofcourse is you want it to happen with a collision so that you can't walk through the object i would suggest adding a collision box and a trigger thats slightly larger. Alternativly if you search the forum for collisions then you can do somthing with OnCollide

 

Thank u mattcscz im working with android so could u help me regarding that