Android: Today's update to Google Goggles brings improved business card recognition to the search-by-photo app, streamlining the process of converting a colleague's business card into a digital contact. Goggles had biz card recognition previously, but it has gotten much better at turning cards to contacts since we first mentioned the feature.
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Google Googles can perform neat tricks like solving Sudoku as well as performing image-based searches, but for now it only runs on mobile devices. However, you can access an archive of the pictures you've snapped in Goggles online.