All the technology you're worried about exists and is widely used. Walk around the streets of New York City. Chances are, you're being photographed by people sharing photos online. My commute involves riding across the Brooklyn Bridge. I'm sure I ended up in 20 separate photographs today, many of which are now on Facebook. Likely with a comment about how I'm an asshole for riding my bicycle in the bicycle lane :) The underlying technology is not going to change once people start wearing cameras. If anything, the sheer volume of photographs being shared will make it less likely that the picture is of you.
As for facial recognition, anyone who can write a few lines of Perl could easily scrape social network profile photos and start matching pictures of people on the Internet to names. It's trivial. And doing this sort of thing manually is popular: search for "human flesh search engine".
As for facial recognition, anyone who can write a few lines of Perl could easily scrape social network profile photos and start matching pictures of people on the Internet to names. It's trivial. And doing this sort of thing manually is popular: search for "human flesh search engine".
Privacy in public just doesn't exist.