As someone who's terrible with names, I'd love a little screen to show someone's name and where I know them from when I run into an acquaintance at the supermarket. (Nobody ever bought into my scheme of wearing trade show badges in their personal lives...) Seriously, though, I am leery of how this capability will be used -- advertising and marketing, law enforcement and stalkers, and who knows what else. I realize it's coming (here already?) but Google Glass made facial recognition seem more real and more glaring. Unlike a cell phone screen, data is right in front of the wearer, who doesn't need to make any extra effort to pull up data.