QR-like codes can be hand-drawn on any surface

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While we've seen some creative uses of the QR code, as well as alternatives such as the sound-based Chirp, so far they have been limited to computer-generated images. Researchers at MIT's Media Lab are hoping to create Graffiti Codes – turning hand-drawn paths on any surface into readable, data-carrying signals. Rather than taking a photograph of the code with a QR-reading app, users simply move their phone over the path. The device's accelerometer detects the pattern of the movement and is able to load the content that path is linked to. Because the method only reads the movement of the…

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