Forgive me as an outsider but this is something I'm interested in from a technology viewpoint.
The one issue I would have is that technology is simply not 100% secure 100% of the time. Any human designed system can be hacked by another human and nothing will ever change no matter how smart and smug IT departments are.
[QUOTE]LCY .... with a 'tower' in Berlin .... would TUPE apply? Or any other airport. A serious point i think./QUOTE]
I can get my head around a UK tower being provided from UK soil as radar is at present but how would it work with UK tower services being provided from a non UK state? How would this ever get past a regulatory authority and how would any incidents be dealt with?
The other issue would be training, I understand you good ATC folks go through a fairly intense training program. How would something like this simply be transferred to another state without the full cooperation of the existing controllers?