Dynamic Password Input via Character Movement Trajectory

The patent applies dynamics by making the password input interface movable rather than fixed. The character image moves along a trajectory that changes position, and the password images are displayed at different locations along this trajectory. This dynamic positioning prevents spyware from reliably capturing the password through static screen shots, as the password location changes during the input process.

The patent introduces a temporal dimension to the password input process. Instead of displaying the password statically, the system moves the character image through space and time along a trajectory, with password images appearing at different positions and times. This adds a time-based dimension to what was previously a spatially-fixed input method, making screen shot hacking less effective.

The patent applies universality by making the trajectory generation unit serve multiple functions: it generates the movement path for the character image, determines the positioning of password images, and controls the timing of password display. This multi-functional approach increases security without proportionally increasing system complexity, as a single unit handles multiple security-critical tasks.

The system applies self-service through the trajectory generation unit that automatically determines password image positions and timing based on the character image's movement trajectory. The system self-regulates the password input process without requiring external intervention for each security parameter, reducing operational complexity while maintaining security.