Card Magic

With this app, anyone who doesn't know magic can play magic! Turn a King of Hearts to a King of Clubs by simply covering the screen of your phone.
It takes advantage of the phones's proximity sensor, which detects the presence of nearby objects without physical contact.

This is sort of a leisure project we made in an hour. We have no plans to further extend it.

The source code of this app is hosted on GitHub under the Apache License 2.0. Feel free to fork it
https://github.com/willhou/Card-Magic

Click on the youtube link below to view the demo video
http://youtu.be/DT5K96iwoas

If you have time, please take a look of my other apps