Doc's now a fellow at Harvard's Berkman center and this is one of the topics he's put on his list of things to explore. There's about 100 people here, so it's promising to be a great day. The usual identity gang is here, but there's quite a few new faces as well given the emphasis on mobile.
Doc started off the day with a list of statistics, noting that there are 800 million cars in the world, 1.2 billion PCs, 1.3 billion Internet connection points, and nearly 3 billion mobile phones. Mobile phones are nearing ubiquity and are intensely personal, so identity is incredibly important.