I heard somewhere HP are working on a wearable system which records pretty much all of your day. Its being pioneered by HP labs in Bristol, yep the same lab the semantic blogger came out of… I still stick by my thoughts that HP are really doing some interesting research in the semantic web area.
The whole concept of a always-on camera isnt a new one. Hell even I thought about it when I was doing work with Trium back in college. But the thing which comes to mind instantly is the privicy issue, you only have to look at slashdot to see what I mean. And even though I see all the points, what I'm more interested in is, the link with semantic blogging. Adding words to the pictures?