MIT's 'bokode' chip said to outperform bar codes | WHAT REALLY HAPPENED


MIT's 'bokode' chip said to outperform bar codes

The new tag, which can be read by consumers with a cellphone camera, looks like a 1-mm-high raised bump. Called a "bokode," the Massachusetts Institute of Technology invention consists of an illuminated microdot behind a plastic lens. It will use flat, reflective holograms in future versions.

MIT's bokode is named after the Japanese term "bokeh," which refers to the image of a round blob that results when a camera is out of focus. MIT researchers reversed that process by encoding the microdot's blob-like image based on the angles at which rays emerge from the lens--an encoding that allows the out-of-focus camera to recombine the rays into the original.

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