I think there's something to be said IN FAVOR of the notion that person A's health risks don't trade off against person B's health risks at a 1:1 rate. The cru

I think there's something to be said IN FAVOR of the notion that person A's health risks don't trade off against person B's health risks at a 1:1 rate. The crucial thing however, in a data protection sense, is that there are too many people who don't realize the implications of giving away data about themselves. A shopper signing up for a loyalty card scheme in a grocery store might sign a blanket waiver allowing the scheme operator to pass the data on to whoever they please to be used in whatever way they want, without thinking about the possibility that it may end up in places where it won't serve their best interests. So there should be something similar here to health warning on cigarettes. Kind of like "Warning: Signing up for this loyalty card may make you uninsurable." Also, I think there should be legal infrastructure in place to ensure that there are certain rights that you can't sign away as part of a contract that, in practice, you don't have the option not to sign (like Google's general terms & conditions).