| 摘要 |
<p>A security code entry method is provided for restricting access to a computer-based system having a processor (30), a display (32), and user input means (34, 36) arranged to move an indicator (38) about the display under user control. When access is required the user is presented, via the display, with a display pattern (26A) comprising a start point (S) and a number of target points, with the security code comprising a predetermined sequence of the target points. To enter the code, the user is required to move the apparent position of the indicator (display of which is inhibited) through the predetermined sequence of target points. The layout of the target points (26A) may be changed after each attempt to enter the code, and the code itself may be carried in a sequence of arrangements of target points.</p> |
