If the company responible is Avonwood Develoments, has any GDI owner contacted them directly to discuss the issue? A UK company with in-house R&D and with through life support on their RFID systems, including service and repair. It might throw some light on the nature of the problem and maybe even a remedy for this frustrating feature.
I must say that the Ford RFID system on the earlier Duratec cars with its combined immobilser and ECU appears quite reliable. It's the only electronics on my car I trust, despite having multiple sets of spares for when that day eventually comes....
