It is likely to be years (or never) before there is a sufficient, predictable, reliable monetary benefit accrusing to smallholder Farmers from traceability itself; the benefit is likely to be outside of traceability (perhaps from information coming back from the data, perhaps from linking to a buyer, perhaps from linking to transport, etc).
Smallholder Farmers will benefit from agricultural product traceability systems when their return on the investment of time and money that they have put into the system are considered. Understanding why and how they would use a system is a first step.
Ernest Bethe