A Contextual Acceptance Model of Mobile Commerce Based on TAM

Users may use a mobile service in various contexts. It is critical to study how users' perceptions and intentions are affected by context. We discuss the definition and structure of context, then propose a contextual acceptance model of mobile commerce based on TAM. We apply this model to the case of a GPS-based taxi-dispatching system. Preliminary data analysis illustrates that context has significant impact on uses' behavior.