Detailed explanation of the picture, deep understanding of Windows8 picture password

Microsoft project manager Zach Pace wrote in the Building Windows8 blog to explain the picture password function of Windows8 to users. It is very suitable for touch screen users, and the login can be completed in an average of 4 seconds, which greatly enhances the security of the password. In mid-September, the picture password function has been opened in the Windows 8 developer preview version. If you miss the tossing friend, you can directly look forward to the Win8 public beta version in February next year. The morning video "Microsoft demonstrates Windows 8 new picture password function", plus the context of the graphic details, I believe that can help you further understand the new features of Windows8 this graphical password.

The more easily remembered passwords are, relatively speaking, the more insecure; at present, ordinary passwords are inevitably cracked by exceptions. Microsoft brings Windows8 graphical passwords to users, with pictures and gestures. Convenient for touch screen users. Ordinary computers can experience sin by using the mouse to experience the picture password function. After the setting is successful, it is normal to use the mouse to unlock the graphic password; when the picture password is unlocked, the number of times will be automatically restored to the normal default text password. User login experience:

The core of the picture password consists of the picture and the gesture drawn by the user. The user can freely select the picture as the background of the picture password, which will help the user to increase the security and memory of the password. This picture now looks like a phone lock screen, and the user can decide at will.

The purpose of the image password feature is to allow users to quickly and easily set up with gestures. To determine the best gesture, Microsoft distributes the images to the testers and lets them gesture. Choose the most important location. Then Microsoft screened out three gestures of points, lines and circles.

Windows 8 remembers the start and end of the gesture, and the gestures of the circle are clockwise and counterclockwise. The login time for manually entering a password is more than three times that of the picture password. After repeated use, the task can be completed using the gesture for 4 seconds, and the normal login mode takes 17 seconds. The picture password working mechanism is revealed:

When the user selects the picture, the system will divide the picture into squares. The longest side of the image is divided into 100. When the gesture is triggered, the shorter side is broken down to create a mesh.

When setting a password, place the gesture on top of the created grid and the corresponding (X, Y) coordinates will appear. For straight lines, the system records the start and end points; the circle, the center coordinates and the radius, and the directionality. If you point, record your own coordinates.

When a user logs in to a picture password, the system will match the action with the recorded gesture, and will only recognize the correct password if the gesture type, order, and direction match. The system will diverge the user's manipulation area outwards, and the most center is 100% outward decrement, only when the matching rate >= 90% is correct.