A handheld biosensor was developed by researchers at the University of Illinois, Urbana-Champaign, is shown June 21, 2013 in Urbana, Ill. Thanks to a cradle and app that turn your smart

 

              A handheld biosensor was developed by researchers at the University of Illinois, Urbana-Champaign, is shown June 21, 2013 in Urbana, Ill. Thanks to a cradle and app that turn your smart
A handheld biosensor was developed by researchers at the University of Illinois, Urbana-Champaign, is shown June 21, 2013 in Urbana, Ill. Thanks to a cradle and app that turn your smartphone into a handheld biosensor, you may soon be able to run on-the-spot tests for food safety, environmental toxins, medical diagnostics and more. (AP Photo/Michael Conroy)