Beyond the privacy implications, I wonder if the technology actually works. I'd be amazed if it's accuracy was even higher than 50% but I guess this kind of te

Beyond the privacy implications, I wonder if the technology actually works. I'd be amazed if it's accuracy was even higher than 50% but I guess this kind of tech has probably been perfected by the gaming industry. It does go down a scary path. So beyond gender and age, what's to stop tracking by race, etc?