I don't understand how it is a PhD project, at MIT nonetheless.
From http://web.media.mit.edu/~mellis/cellphone/index.html I get it is not much of a technical projet, more like a sociological one (how hard can it be for a layman, is that useful, why, etc.), but I don't understand what the challenges are.
Can you explain how it useful as a research project ? What are you expecting to learn overall ?
Thank you.