how i can convert thjs code to touch (Input.anyKeyDown)

using UnityEngine; using System.Collections;

public class PlayerController : MonoBehaviour {

 // Use this for initialization
 void Start () {
     isStartButtonPressed = false;
     Time.timeScale = 0.0f;
 }
 
 // Update is called once per frame
 void Update () {
     updateScore();
     if(!isInView())
     {
         restartGame();
     }
     if(Input.anyKeyDown)
     {
         move();
     }
 }
 
 private bool isInView()
 {
     Vector3 port = Camera.main.WorldToViewportPoint(transform.position);
     if((port.x < 1) && (port.x > 0) && (port.y < 1) && (port.y > 0) && port.z > 0)
     {
         return true;
     }
     else
     {
         return false;
     }
     
 }

 private bool isStartButtonPressed;
 public GUIText scoreLabel;
 void OnGUI()
 {
     if (!isStartButtonPressed)
     {
         GUI.TextField(new Rect(Screen.width/2-65, Screen.height/2-11 ,130,22), "Do something to start");
         if(Input.anyKeyDown)
         {
             Time.timeScale = 1.0f;
             isStartButtonPressed = true;
         }
     }
 }

 private void move()
 {
     rigidbody.velocity = new Vector3(0,0,0);
     rigidbody.AddForce (new Vector3(275,200,0), ForceMode.Force);
 }

 void OnTriggerEnter(Collider other)
 {
     restartGame();
 }
 
 private void restartGame()
 {
     Time.timeScale = 0.0f;
     isStartButtonPressed = false;
     Application.LoadLevel (Application.loadedLevelName);    
 }

 private void updateScore()
 {
     int score = (int) (transform.position.x / GenerateWorld.distanceBetweenObjects);
     if(score != (int.Parse(scoreLabel.text)) && score > 0)
     {
         scoreLabel.text = score.ToString();
     }
     
 }

}