While many of rely on passwords to protect their identity, there's more sophisticated identity recognition technology called "biometrics" for use. Security measures that use biometrics rely on a person's unique characteristics and traits rather than on what that person can remember, such as a password. Ocular biometrics, in particular, relies on iris and retinal scanning. With support from the National Science Foundation, computer scientist Oleg Komogortsev and a team at Texas State University are taking the technology a step further, making it even more secure, reliable and nearly impossible to fool. Part of the National Science Foundation Series “Science Nation.”