[fixermark]

I think that's over-thinking it. Medical alert bracelets already exist; I can't imagine it'd be too much challenge to embed a ruggedized USB stick in one, and people generally don't worry about less technical people failing to remember to wear their bracelet.

[mcculley]

That's a really good point. It wouldn't take much more miniaturization than what we already have to put that in an earring or something else people wouldn't mind having all the time.