I think it makes a huge amount of sense that the government would like to put a tracking device and remotely-activated bug in everyone's pocket. And smart phones, pads etc are all essentially that. And yes, with NFC iWallet stuff they have even more availability to where you are, what you do, drink, eat, go etc. Rather frightening.
Combine that with this article:
http://news.cnet.com/8301-17938_105-20068404-1/apple-patent-suggests-infrared-sensors-for-iphone/... and you've got something even worse. In the patent they describe a way for "copywritten material" ie., a concert, can be flush with an infrared signal that an iPhone (assumably) sees and then knows to shut down the camera. (Side note, I've already today looked into patenting a filament lens that would float over the iPhone camera that would filter out IR, essentially removing the copy protection.) OK, concerts are bad enough. But when President Asshole of Werefuckedistan decides to bathe an area in IR continually while he massacres his people you've got a real world example of what I'd consider to be pretty negative control.
The challenge is the Faustian bargain that all of these devices represent. Google Mail: You get it free, but we get to parse it and decide what we'll market to you. Apple's new music locker (I assume): We will mirror all your music so you don't have to upload it. But oh BTW the music industry now knows every piece of music you have, ill gotten or not. Facebook will connect you to everyone you want to know. At your expense of them using everything they now know about you as a method for extracting money from you.
I don't know if the notion of "get off the grid" is even valid anymore, I think Pandora's box is wide open. So I wonder if we need to simply change our privacy paradigm and get over it. I really dunno.