I used something similar back in 2007 and it just became a pain. It was never unusable -- lots of people do it -- it was just never truly seamless for what I sa

I used something similar back in 2007 and it just became a pain. It was never unusable -- lots of people do it -- it was just never truly seamless for what I saw as decreasing value for the minor frustration. The experience of using this kind of technology should be as embedded in everyday life as keeping your keys with you all the time, in my opinion. That's how you get people to do it more.