  Technological advancements have led to significant improvements in healthcare
for prevention, diagnosis, treatments, and care. While resourceful regions can
capitalize on state-of-the-art healthcare technologies, there might be barriers
and delays in technology-enabled healthcare availability for a low-resource
region. Unique innovations guided by the constraints of low-resource regions
are required to truly make healthcare technologies ubiquitous and achieve the
goal of "healthcare for all". In this review, we identified several research
and development works that have investigated technology-based healthcare
innovations targeted at low-resource regions. We found three main pillars of
work towards this end: low-cost hardware for the affordability of medical
devices, use of information and communication technology (ICT) tools for
scalability and operational efficiencies in healthcare services, and mobile
health solutions. Several emerging technologies are also promising for
healthcare in low-resource regions, such as artificial intelligence, the
Internet of Things (IoT), and blockchain technology. We discuss these emerging
technologies too in this review.
