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Give life to your pictures with this quick Augmented Reality tutorial !

------------ Download Unity---------------

https://unity3d.com/get-unity/download

--------- Add The TrackableEvent Script-------------

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;

public class TrackableEvent : DefaultTrackableEventHandler {

public UnityEvent onTrackingFound;
public UnityEvent onTrackingLost;

protected override void OnTrackingFound()
{
base.OnTrackingFound();
onTrackingFound.Invoke();
}

protected override void OnTrackingLost()
{
base.OnTrackingLost();
onTrackingLost.Invoke();
}
}