When you step outside, anyone can snap your photo. And said photo could spread all over cyberspace—Twitter, Facebook, you name it. Heck, it could even end up here! Maybe you don't want that. Maybe you want privacy. Maybe you don't mind looking silly.
Japan's National Institute of Informatics is working on a "privacy visor." The first version, which debuted late last year, featured LED lights. The institute conceded that wearing it might draw more attention. (Um, yeah?) Its latest version is not powered by electricity, but rather, by white dots.