Good WIRED article. For the Minority Report (movie) style of your data available everywhere, we need a bit of hardware also for authentication. The only physical thing I always have with me is my wedding ring - it would be neat if small RFID or other security/auth gear could be easily put into existing things, like wedding rings. An alternative would be something under the skin, but I am not so keen on that.<p>Not to wander off too far afield here, but: secure auth is required to move further forward in user convenience, but in a world where most major companies and most large government organizations get hacked into, having a secure and unobtrusive "single sign on" to all services is tough.<p>In anycase, I think Dropbax really gets a lot of stuff right. I was just helping a friend and his wife deal with data on different devices and I kept pushing Dropbox. For me, the $100/year is a no-brainer buy decision because I get much value from Dropbox, but they were not convinced.