Given the fact that practically every one on this planet will soon have their own personal mobile phone, it's a very tantalising goal to be able to use this personal phone to help people improve their personal health ! Mobile phones are personal; private and ubiquitous and can be very powerful tools ! Mhealth has become a "hot area" today - and there are many clever applications available which help phones to become health monitoring devises.
However, most of these apps have been developed in the West and they are designed for "smartphones". They are cool and fun to play with but we desperately need clever developers to produce apps for dumb phones - the kind of phones the billion who are at the "bottom of the pyramid" have to use daily. This is a much bigger challenge - but the results can be earth-shaking !