Merging touches

Firstly, I am sorry about my English. I have 4 more scripts similar to this. Using one finger or using multiple fingers that far from eachother is not a problem, but when i touch 2+ finger very near they are merged(as there are a single touch). How can i solve this? Or how can i do this in another way? Thanks for answers.

using UnityEngine; using System.Collections;

public class Finger1 : MonoBehaviour {

 public GameObject FingerDot1;


 void Update()
 {                                  

     if(Input.touchCount > 0)
     {

     TouchPhase phase0 = Input.GetTouch(0).phase;
         Vector3 first = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
     RaycastHit2D hit = Physics2D.Raycast(first,Vector2.zero);

     switch(phase0)
     {
     case TouchPhase.Began:
         FingerDot1.SetActive(true);
         FingerDot1.transform.position =new Vector3(first.x,first.y,-15);
         break;

     case TouchPhase.Moved:
         FingerDot1.transform.position =new Vector3(first.x,first.y,-15);
         break;

     case TouchPhase.Ended:
         FingerDot1.SetActive(false);
         break;

     case TouchPhase.Canceled:
         FingerDot1.SetActive(false);
         break;
     }

     }
 }

}