This Life Science Insights Flash looks at Dendrite International's response to the acute challenges facing drug companies in their efforts to find ways of increasing the productivity of their sales representatives. Dendrite aims to improve the usability of sales force automation (SFA) software through better interface design, and it claims that its First Source Sales Applications (FSSA) Version 4.0 release increases productivity by applying human-centered design (HCD) in the development of its new interface. This document briefly describes the design approach used for FSSA 4.0.