To use it you should ideally have an iPhone and use the app.
But while we're still in a non-iPhone pre-apps mobile/cellphone state here at Radio Dupree, we noticed that as long as you've got an email account you can join in the fun.
But what's it all about?
Quote from the Joan's blog entry:
As a longtime Steely Dan fan this has been on my mind for many years. I had my own epiphany on New Year's Eve 2006. I walked into a busy PA State Liquor Store and found Deacon Blues playing, with patrons and employees apparently oblivious to the chorus "Drink Scotch whisky all night long / And die behind the wheel." Then and there I determined that I must, somehow, initiate a worldwide tracking system to preserve this, and other golden Dan-in-retail moments, for posterity. I set up a database and put a website together containing a form for people to input the when and where of their Steely Dan retail encounters.
Fast forward to the creation of the ici mobile app. Geo-located data? User generated mobile content? Yes, ici and the Dantrack project are a match made in heaven.
...
Imagine walking into a Rite Aid, pulling out your iPhone, and learning how many times Hey Nineteen has been played here, or learning that Dr. Wu (which features a strung-out junkie, BTW) once graced the audio backdrop at the prescription counter. Perfection and grace, indeed.
More:
http://blog.icihere.com/introducing-the-dantrack-channel.