According to the details that Microsoft has revealed on the Building Windows 8 blog, the company is working on new ways in which Windows 8 users will be able to log in to their tablet PCs; with a gesture-based system to be introduced in place of the system in which numbers and letters are typed.

The new system will enable the Windows 8 users to unlock their computers by selecting a picture which has some personal meaning attached to it. For unlocking the system, users will have to create a sequence of taps, lines, and circles that they have to carry out in the correct order.

In the opinion of Microsoft, even though the theoretically possibility of compromising the password of a gesture-based system cannot be completely ruled out, the risk of breach will be quite low. In the wake of the fact that many users rely on simple passwords, the gesture-based system clearly underscores greater security for a number of people.

Despite the fact that Microsoft has maintained that the multitude of password combinations available under the gesture-based system will make the password options so vast that it will eventually end up providing additional security, Kenneth Weiss, inventor of RSA's SecurID token, differs in opinion.

According to Network World, Weiss opines that the security implied via the gesture-based system will not be “serious security” because it will be easily possible for a person to record, even from a distance, the gestures that a user may make upon a screen.