Earlier quoted context omitted.
Here, let's go the other way (maybe they even go together!): Let's imagine a world where you sign up for discounts on certain goods in exchange for allowing your Glass to randomly take pictures throughout the day. This data is mined and tagged and sorted, until one day the .gov or .mil or some hacker decides to pull it and use it for nefarious purposes. The fact is that the nerd fantasy of getting a HUD (to track wha…
What a ridiculous slippery-slope assertion. The same argument could be said for the telephone - "Inevitably some company will offer discounts in exchange for random recordings of your phone calls. Everyone will sign up for that and then a hacker will take advantage of it." There are at least two reasons stuff like that doesn't occur: 1) The cost of recording, storing, parsing, and analyzing all that data far outweigh…
"...cost of recording, storing, parsing, and analyzing all that data..."
You do realize that this is exactly the Google and Facebook business model, right? Targeted advertising using user-generated content?
"The number of people that might sign up for privacy invasion in the interest of a 2 for 1 Big Mac would be so insignificant"
Over a billion people have signed up for Facebook, giving up their own social graph data and (as we've seen recently) address books, and that's just for a free shitty profile page whose design changes on a whim. Add a burger to that, and you've got a deal.
There's no slippery-slope here--at this point, the dataset is large and obvious enough that if you aren't blinded by the magical nerd future you'll see very reasonable concerns over what might happen.