Increasing numbers of pharmaceutical companies are investing in tablet PCs for their sales forces. The motivations are multiple, including regulatory as described in a recent Wall St Journal article.
See this link from MedAdNews by Steven Niles on the Feedback Loop enabled by electronic sales tablets. The by-line is somewhat ambitious: "New technology is making closed-loop marketing more effective and creating a stronger connection between sales and marketing through real-time feedback from physicians."
However, an incremental phased approach should be taken to develop a feedback loop. Think about what types of information can be shared with sales representatives without distracting them.
Plan quarter by quarter as to what can be achieved. Feedback may be partly manual at the start. Develop a measurement plan, and continually optimize and improve each quarter.