Via Slashdot, more happy news about neuromarketing (kissing cousin of neuroeconomics), that is, reading your brain to see how you respond to advertising and what you're thinking about when you decide to buy or not buy any old thing.

Yesterday in the Boston Globe (too lazy to find link) there was a story about law enforcement passively collecting DNA without a warrant by following around suspects and, for example, picking up discarded cigarette butts.

Not hard to imagine marrying these two trends. On the other hand I'm just a technoparanoid.