Hi guys (n gals)

I am looking to buy a Sony CDX-M 850MP, I think it is a model that has the
non removable flip front. The front flips around and darkens out to show
just a black panel in the car.

Does anyone know what sort of security (from theft) this offers?

I know kenwood used to offer (and still do... I think) a scheme with face
offs where if the radio was stolen they would replace the unit as long as
proof of purchase was available, and the face of course. If I remember
correctly they also offered a similar guarantee with the 'Mask' range. Does
anyone know if Sony offer a similar scheme.

Thanks
Stephen