Object.GetInstanceID

Returns the instance id of the object.

The instance id of an object is always guaranteed to be unique.

JavaScript

print(GetInstanceID());

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    void Example() {
        print(GetInstanceID());
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    def Example():
        print(GetInstanceID())