GlassUp is a wearable computing project that turns a pair of glasses into a head-mounted secondary display for your smartphone. A projector beams images onto a glass panel baked into the right-side lens, theoretically letting you read texts, tweets and emails on the go. We got to try a very early prototype here at CeBIT, which pushed microfilm slides onto the yellow-and-black, 320 x 240 display. Unfortunately, we weren't able to see anything too clearly, or get its touch controls to work properly, so while we like the concept, we're not sure if we're sold on the implementation ju