Hrm, perhaps a solution to the breast thing would be that each google glass has a privacy feature that acts sorta like an invisible shield. You opt-in to this feature, and your glass will send signals to other glasses that you don't want to be contacted or photographed and so on. If someone is around with that, taking a picture/video of/with them won't be possible. They'd have to get out of the screen or maybe even some photoshop magic would happen where they just disappear from videos and photos.

As for the credit cards and personal privacy, that's a bit harder... I mean, the law states that you can pretty much record someone on public property. This is only just really making use of that law. I guess a solution would be the have everything go through the glass. So, someone has to pay via credit? Google glass will do that, no need to take the card out. Alternatively, credit cards could also change. I know this misses the larger point of your privacy concerns, but I'm just speculating on potential solutions for fun.

I find it a bit sad that things are going in this state of constant surveillance, but what can you do? This seems to be the future people want. I still have this minor unverifiable suspicion that this is really a generational thing. I think future generations won't like all of these things as we do, and we only like these things because we've been from an era in which contacts, memories, photos were constantly lost. Maybe the future will grow to appreciate this losing of memories, ideas and so on and no one will see the appeal of Glass or maybe even the always remembering Internet as a whole.

Honestly what I find crazier is that if google glass takes off, nearly everyone will wear glasses. I know about the valid privacy concerns and everything, but I just find THAT the oddest thing out of google glass.