infrared light sensor inside a finger clamp looks at red blood cells if the cells are infected with malaria their shape color and concentrations of different. data is transferred to the after the smartphone which detects those changes the diagnosis then appears on the display. is much faster than the standard microscope method which takes at least fifteen minutes for one single test. for many years the world health organization reported steady gains in the fight against malaria but now the u.n. agency says progress the stalled in part because of a lack of funding. quick cheap and reusable tests such as marty barr who could make a significant difference. more than three million patient applications were filed in a single year in twenty sixteen that's