Summary: Recent surge of ubiquitous computing devices enables users to carry their own ubiquitous decision support systems (UDSS) and make important decisions by using them. However, there few studies investigating why UDSS users intend to use the systems continuously because there are a large number of elements to be taken into consideration. Peculiar factors about the UDSS that this study focuses on include the connectivity and context-awareness function, which were not considered in previous studies of the adoption of UDSS. Accordingly, this study empirically explores this research question by using the scanphone-based ubiquitous delivery system (UDS), which many delivery service providers have been adopting recently as a form of the ubiquitous decision support system (UDSS). The results reveal that the connectivity, context-awareness function, and perceived values play meaningful roles in the UDSS. Based on the results, this study suggests implications and directions for future research for planning and realizing the future UDSS.