We've certainly seen some clever methods of searching from one's mobile, but Vodafone's latest idea is quite the stroke of genius. Showcased at CeBIT, the Otello search engine simply uses images as input; in other words, handset owners just snap a picture of anything -- a landmark, DVD case, unidentified flying object, etc. -- and Otello then "returns information relevant to the picture to the mobile phone." Reportedly, Vodafone is expected to conduct a trial with German paper Bild in which readers can "find out more about specially-marked articles by photographing them with their mobile's camera and sending the image to [the aforementioned paper]." Unfortunately, the carrier is being tight-lipped with its plans for Otello beyond the trial, but if this stuff functions as advertised, we can't see it remaining a secret for long.