The mobile payment services markets are currently under transition with a history of numerous tried and failed solutions, and a future
of promising but yet uncertain possibilities with potential new technology innovations. At this point of the development, we take a look
at the current state of the mobile payment services market from a literature review perspective. We review prior literature on mobile
payments, analyze the various factors that impact mobile payment services markets, and suggest directions for future research in this
still emerging field. To facilitate the analysis of literature, we propose a framework of four contingency and five competitive force factors,
and organize the mobile payment research under the proposed framework. Consumer perspective of mobile payments as well as technical
security and trust are best covered by contemporary research. The impacts of social and cultural factors on mobile payments, as well as
comparisons between mobile and traditional payment services are entirely uninvestigated issues. Most of the factors outlined by the
framework have been addressed by exploratory and early phase studies.