What is an identity system? (Scripting News)Friday, June 22, 2007 by Dave Winer. Dinner last night was with Doc Searls, at the St Francis Hotel in San Francisco. When I got on the BART in Berkeley, I sent an email to Doc from my Blackberry saying I was on the train. When I got to the Powell Street BART station, I sent an SMS saying I had arrived. I walked three blocks to Union Square, and there was Doc, smiling and ready to talk about ident
