“The good news about mobile penetration is how you can interact with people at scale to serve a social good and be in touch with people’s needs,” says Josh Nesbit, executive director of FrontlineSMS:Medic, a software tool that was rolled out to health care workers in Malawi 18 months ago and is now being used across 11 counties, mostly in sub-Saharan Africa. The service is a sister product of FrontlineSMS which helped prioritise SMS messages following the Haitian earthquake.

Read more on the Guardian website.