This study investigated sociotechnical criteria in the design and specification processes of smart card based projects through a case study. The adoption of the innovations in the case study was investigated. The study consisted of three phases: analysis, design and implementation. These were in relation to sociotechnical design criteria and its incorporation into a design methodology. Results from this study indicated that the adoption of the innovations was largely based on the design and specification processes. A formal model for these processes was constructed based on the case study. A recommendation for ongoing research into the refinement of the model presented is suggested. A n extended research project may focus on the model, or on one specific component.