A Tuning Resolver dongle could be created that would work with any DOCSIS-compliant cable system, which most all are, and very likely all that would be using SDV would be. Of course, that's referring to the hardware. What would be necessary is firmware implementing whatever protocol was necessary to support the SDV requests on a specific system. And the simplest thing to do would be to create this Tuning Resolver USB dongle and establish a standardized way (or ways) it attempts to bootstrap itself via communications over a DOCSIS-compliant cable modem; that bootstrap process would involve loading firmware on the Tuning Resolver that is created specifically for that cable system. In the end, you have one piece of hardware that can be utilized by all cable systems and only a tiny bit of firmware coding may vary between cable systems, all of which could be delivered to the USB dongle in the field, requiring no preauthorization by anyone.