Interesting to see that this femto from Samsung has a GPS device in it, which is used to "geo lock" it to an operator's licenced territory.
I presume this is particularly relevant for countries like the US where there are regional operators. For markets elsewhere with nationwide licences, I guess that the IP address of the broadband connection should be sufficient to ensure customers don't put the device in a suitcase and try & plug it in somewhere the provider isn't permitted to operate.
Interesting to see the real-world practicalities starting to come out, though. I suspect there's going to be a range of issues around security/authentication for femtocells that are only now being recognised.