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Smartphones can be used as a pocket doctor

Smartphones will soon become mobile laboratories which can monitor bone density, calculate red blood cell levels and even predict if an asthma attack is imminent. Scientists are repurposing the technology which already exists within phones, such as accelerometers, camera flashes and microphones to use as medical tools. Professor Shwetak Patel, of the University of Washington is currently devising an app which can detect red blood cell levels simply by placing a finger over the camera and flash, so that a bright beam of…