Timely information access and effective knowledge support is crucial to law enforcement officers' crime fighting and investigations. An expanding array of e-government initiatives target the development of advanced information technologies and their deployment in law enforcement agencies. Abase in point is COPLINK, an integrated system that provides law enforcement officers with timely data access, effective information support, integrated knowledge sharing, and improved collaboration within or beyond the agency boundaries. In this study, we examine law enforcement officers' acceptance of COPLONK Mobile by proposing and testing a factor model premised in established theoretical foundations. According to our results, the model is capable of explaining or predicting officers' intentions to use the technology. Our survey data support the proposed model and the hypotheses it suggests. Among the acceptance determinants we investigated, perceived usefulness appears to have the most significant influence on individual officers' intention to use COPLONK Mobile.