iPhone biosensor cradle brings us one step closer to having tricorders (video)

It seems like every day we're getting a little bit closer to having tricorders, and today's no exception. Researchers at the University of Illinois at Urbana-Champaign have designed hardware and software that turns the iPhone into a powerful biosensor that's useful for toxin and pathogen testing as well as medical diagnosis. The package consists of a cradle that contains an assortment of lenses and filters which line up with the handset's camera, along with an app that guides the user through th...