This was an installation project I did. A telephone number was projected on the wall and audience members would dial it. The Asterisk PBX I was running and gave an Interactive Voice Prompt to the person on the phone.
mrmr is a project which enables the use of OSC using an iOS-based client such as the iPhone, iPod touch or the iPad. Its functionality extends to integrate with on-board controls such as the accelerometer, which may be used in conjunction with other inputs in live performance.