We’ve known since 1977 what a hologram should look like. A tiny blue Princess Leia Organa of Alderaan asking Obi-Wan Kenobi for help. That’s the vision. And we’re getting closer to realizing that vision. But there are a lot of technologies that represent steps along the path to the Princess image, as Mike Elgan describes, and they’re interesting in their own right.
Mike always finds interesting new technologies. Like the phone-powered nose-hair trimmer or the saliva scanner he describes in a recent blast from his site. (You may have to dig for those specific items, but you’ll unearth other gems as you do.)