Biometric device can verify age -CNN
A leading security company is exploring technology for verifying whether a user is a child or an adult by analyzing a bone in a person's finger. Of course, bone doesn't change drastically on the day someone turns 18 or 21, so this technology is more useful at keeping younger children - those under 14 - from adult sites that employ the technology. Also, operators of chat rooms meant for kids could use the technology to keep out adult predators.