This project demos a AR Tunneling Effect trick by Unity's standard asset
Due to the Vuforia's Policy, I can't include Vuforia SDK in my public project. So you need to download and import the SDK by yourself, and setup the Vuforia Lisence Key.
Here's the video tutorial though https://www.youtube.com/watch?v=ye7QTlLsTjc
It's a trick I usually use in my AR projects, you can find more detail on my tech-blog: https://newyellowdev-en.blogspot.tw/2017/04/ar-light-and-shadow-with-projector.html
And you might interested in my AR projects also, please check out my fanpage: https://fb.com/aweekaproject
Oh, and you may also need to print out the picture, or download it on your phone
