With Microsoft's HoloLens and a special application developed by MIT researchers, AR can be used to find hidden objects.
https://www.cnet.com/tech/computing/x-ray-vision-could-be-the-next-superpower-you-get-with-augmented-reality/?utm_source=dlvr.it&utm_medium=blogger#ftag=CAD590a51e
https://www.cnet.com/tech/computing/x-ray-vision-could-be-the-next-superpower-you-get-with-augmented-reality/?utm_source=dlvr.it&utm_medium=blogger#ftag=CAD590a51e