ABOUT FACIAL RECOGNITION: Facial recognition is a form of biometrics, the science of using biological properties to identify individuals. Other personally unique properties, such as fingerprints, an iris scan, or voice recognition can also be used. These unique "signatures" can be used to authenticate or determine identity. Biometric security systems are growing in popularity, popping up in hospitals, banks, even college residence halls to authorize or deny access to medical files, financial accounts, or restricted areas.
OTHER METHODS OF SECURING COMPUTER SCREENS: Liquid crystal displays, like most computer monitors have one security feature by design -- the contrast ratio of the image changes depending on the angle of the viewer to the screen. Filters in the form of a physical screen or software can decrease the contrast further to limit readability. Plastic shields or hoods can also be used to directly obscure viewers from the screen.
The Institute of Electrical and Electronics Engineers, Inc.-USA, contributed to the information contained in the TV portion of this report.