Several new notebook models no longer need you to enter a password to log in. Your face is scanned with biometric software, and facial features are detected to unlock the Pc. However, experts from Skis Internet Security in Vietnam have proven how easy these are to defeat. Despite more recent versions of the technique using multiple images shot in different conditions to improve accuracy, the software used by several major manufacturers was proverr to be so weak that anyone could simply hold a printed image of the owner to unlock the laptops. In some cases, even the owner's Facebook profile photo could be printed and used. In some cases, the researchers needed to create high-contrast versions of the same photos, but they still worked. PC users are advised that these scanners are more of a gimmick than actual security. Fingerprint scanners are much more effective.