Input.anyKey
static var anyKey: bool;
static bool anyKey;
static anyKey as bool
Description

Is any key or mouse button currently held down? (Read Only)

	// Detects if any key has been pressed.

function Update() { if(Input.anyKey) Debug.Log("A key or mouse click has been detected"); }
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Update() {
        if (Input.anyKey)
            Debug.Log("A key or mouse click has been detected");
        
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Update() as void:
		if Input.anyKey:
			Debug.Log('A key or mouse click has been detected')