The Interact Controller lets you control digital artworks and installations using tones played through your iPhone.
It's really simple to use. First make sure your iPhone is not in silent mode. Then plug the installation's audio cable in to the iPhone's headphone socket. You will now be able to use the buttons on the controller screen to interact with the installation.
This app was developed by digital artist Sean Clark for use in the Interact Gallery in Leicester, UK. For information on how it works - and instructions on how you can make use of use it in your own projects - visit the Interact Gallery website.