Easily the most futuristic-looking among devices launched at IFA. Sony’s head-mounted “Personal 3D Viewer” can be slipped onto your head to give you a movie theater-like experience, Sony says. The device has separate panels for the left and right eyes which display independent HD picture quality. The viewer technology results in 3D views and visions. Aimed at gamers and film fans, it comes with built-in surround-sound headphones.