Sure, your iPhone 3G's touchscreen is nice, but with Ringo, a "holographic shadow," you don't have to touch anything. According to this clip, a Ringo-enabled mobile device's buttons will project onto the ground in front of you. Skip to 1:15 in the clip embedded below and see handy this could be when it comes to walking directions from Google Maps. The only holdup? Ringo doesn't exist yet. Neither do the other 9 user interfaces Smashing Magazine features in its list of "10 Futuristic User Interfaces." We know that won't stop you from ogling them inappropriately.