But unlike DanKam, most of the more than a dozen other apps simply allow the user to click on an image to identify a color.

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To analyse the new material, researchers at the University of Queensland's Global Change Institute are using image recognition software to identify the creatures recorded in the photographs, and 3D-modelling programmes to monitor how the habitats change over time.

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The company uses image-matching technology to identify the objects inside of images.

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After almost two weeks he was eventually tracked down to a house that police were able to identify from an image Davidson had posted on Facebook.

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The overall distribution of these readings can be converted into an image of the fingerprint that is accurate enough to identify who left it with standard recognition software.

ECONOMIST: Forensic technology

The patent pre-defines a number of gestures, such as ones for facial recognition, a selection gesture and a pointing gesture (to identify a specific section of an onscreen image).

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Essex Wildlife Trust said it was difficult to identify the species of deer from the CCTV image.

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Presented with a digital image of a painting, PlinkArt would poll its database for a match, helping to identify the work of art.

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It can also identify and monitor the position of the eyes, so it knows exactly where each image needs to be beamed, and passes this information on to the holographic-projection system.

ECONOMIST: Monitor