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An App That Uses Light Signals To Send Secret Messages

Japanese camera company Casio has developed a free iPhone app that uses light to send messages to other phones.

The ‘PicapiCamera’ is said to be the “world’s first iPhone app which uses visible light communication technology”, according to DigInfo TV.

Messages are encoded, and sent using red, green and blue flashing lights in the app.

When other phones capture the flashing lights within the app, the data is transferred to them—the ‘camera’ approach to communicating data.

“A device that captures light is a camera, so the idea is to relate light obtained by a camera to information. We’re using the camera approach—visible light communication through image sensors,” Nobuo Iizuka of Hamura R&D Center said.

When exchanging information, the system lets more than one person get the information at one go.