The association between fast-growing mobile technologies and increasingly more mobile devices has allowed the introduction of virtual environments into daily activities. That includes the health care domain, where concepts such telemedicine, telehealth, eHealth, and mHealth have emerged. In addition to presenting these new concepts, this article aims to discuss the advancements and challenges of mobile health technologies stemming from considerations regarding development, application, legal aspects, and ethics. Because of their innovative nature, mobile health technologies entail the engagement of many actors in the journey to reach end users, covering conception, technical development, sanitary regulations, and design of clinical guidelines, having raised a great deal or interest in terms of monitoring and care across a variety of clinical conditions. However, assessment of the effectiveness and safety of mobile health technologies does not seem to involve the same methodological rigor imposed for clinical trials of drugs and other health products; still, the enthusiasm produced by this innovation counters some of the regulatory and ethics concerns relating to data protection, privacy, access to mobile devices, and technological or social inequality. Despite possible limitations, mobile technologies, as well as other telehealth resources, have produced promising results. Digital healthcare has great potential for expansion and represents an opportunity for the review of traditional practices with selection of mobile technologies for incorporation into the health care system whenever evidence-based benefits are verified.
