Looks like someone has already made a Unity ARKIT plugin https://www.assetstore.unity3d.com/en/#!/content/92515 https://www.assetstore.unity3d.com/en/#!/conten

Looks like someone has already made a Unity ARKIT plugin https://www.assetstore.unity3d.com/en/#!/content/92515 https://www.assetstore.unity3d.com/en/#!/content/92515