Point of care in your pocket: a research agenda for the field of m-health.

A frontier mindset fosters real and rapid innovation in mobile health. This fast, iterative approach should not be lost, especially given the speed with which mobile and wireless technologies evolve, but caution is warranted. Although well on track towards attaining its goal of reaching 1 million mothers by 2012, Text4Baby, a free mobile text service sponsored by Johnson & Johnson in the United States of America, is a case in point.