Facial Recognition: The One Technology Google Is Holding Back:
"'I'm very concerned personally about the union of mobile tracking and face recognition,' he explained, adding that the company feared that these capabilities could be used both for good and 'in a very bad way.' Schmidt described a scenario in which an 'evil dictator' could use facial recognition to identify people in a crowd and use the technology 'against' its citizens."

I'm more worried about a "good" leader using technology to track what people see, read, listen to, interact with, correspond with, talk to, record their movements, and use that to incarcerate them without trial, torture them, and kill them if the "good" leader saw fit. But that could NEVER happen, so don't worry Eric.