"Silicon’s other role, when it is pure, is as a dielectric—a material that can be penetrated by an electric field, but not an electric current. It is silicon’s role as a dielectric that Dr Fortunato and Dr Martins propose to replace."
Recent breakthrough in utilizing paper (cellulose) to replace silicon: see the Economist's article "Looks Good on Paper" here. Now, this could see RFID become pervasive... I predict that the RFIDs will make entry through consumer product goods and use by consumers for their daily use. Hand in hand will be the privacy concerns. How have such concerns been resolved in history? Well, we know the answer!
See Franz Dill's compendium of blogs on RFID here.