It's not quite the same, sure, but this is almost what my Twitter/Evernote/Delicious trifecta have become ;-)
The resolution is "good enough" for now. I can usually figure out where I was and when, what ideas I was working on, and recall Web sites I was looking at by mere keyword/tag alone.. it comes in very handy sometimes!
Reminds me of The rememberance agent, a emacs plug-in that recorded/indexed all actions/text. It was mainly used for those in the mid-90s doing wearable computing projects at MIT. Though it was only used for text.
Ignoring for a moment how impractical this currently is, just because you have a ton of data doesn't mean you can search it effectively. In fact, the more data, the harder it will be to find the relevant bits.
The resolution is "good enough" for now. I can usually figure out where I was and when, what ideas I was working on, and recall Web sites I was looking at by mere keyword/tag alone.. it comes in very handy sometimes!