Corvis is developing new technology that uses only flashes of light to transmit data from sender to receiver.

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Rich data - Unique to Contour, a GPS receiver allows users to capture and share a different perspective, providing beautiful HD video with overlays for speed, elevation, and distance.

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Your mobile phone, acting as a store of your credit card data, sends it wirelessly to a nearby receiver, which could be another phone, a dedicated terminal, or a payments module embedded in, say, a vending machine.

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The data is tracked passively and stored in a USB key that plugs into the receiver unit and detaches to be read on your home computer.

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Dr Douglas-Hamilton's collars, however, simply record their data in memory chips until those chips are prompted to regurgitate their contents to a receiver on board an aircraft that flies over the study area once every few months.

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For on-location shooters, landscape photographers or enthusiast photo travelers, the EOS 6D features a built-in GPS receiver to record longitude, latitude, elevation and Coordinated Universal Time (UTC) as EXIF data for seamless geo-tagging while shooting.

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Data, such as song titles, from connected iPads, iPhones, iPods or USB drives is shown on the receiver's attractive on-screen display.

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