You said — “If it does happen, remember, there has never been a GPS receiver made that cannot be wholly defeated by the proper application of tin foil....”
Very true, but then you open yourself up to punitive penalties for violating the law. I would imagine that there are going to be some draconian measures for those who try to override the system...
Without a doubt. If you have a strong understanding of RF, as I do, you just have to be clever. There are many very subtle ways to block weak signals or trick receivers......