Hello,
Remote Pi is an iOS application that lets you use your iPhone, iPad or iPod touch as a wireless keyboard and trackpad for your Raspberry Pi. You can leverage this functionality on your own applications by simply responding to keyboard and mouse events.
Checkout examples using PyGame on GitHub: http://github.com/remotepi/examples
Video demo on Vimeo's RemotePi channel: https://vimeo.com/channels/remotepi
More examples coming. If you would like to contribute PyGame examples to the repo, please do so. Fork the repo and send pull requests.
Visit http://remotepi.io for more info.
Luis