Some time ago we hosted a guy who developed a project for detecting patterns with camera phones. Interesting enough to catalog and tag data, this approach can present an interesting solution for scrolling the map in our interface design.

With the integration of cameras, mobile phones have evolved into networked personal image capture devices. Camera-phones can perform image processing tasks on the device itself and use the result as an additional means of user input and a source of context data.

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Accidentally I found this link to a commercial product that does exactly as the program developed in Zurich. It is used to read barcodes. Funny! By the way, link provided by the Tao of Mac.