Facial recognition is everywhere. The technology is used in China to make kids pay attention and in California to order burgers. You can of course use your face to unlock your iPhone, but the tech also has the potential to screen passengers at US airports and recognize criminals. These last two uses are problematic, as the tech isn't ready to handle darker skin tones and genders. Microsoft hopes to help fix this problem with improved facial recognition technology the company claims has reduced error rates for men and women with darker skin by 20 percent.