| 摘要 |
A computer implemented security system and method are disclosed. A user interface 20 is displayed on a display device, the user interface including a positioning guide 100 and a marker. User inputs are received on a password comprising a plurality of symbols and a location for each symbol in the user interface 20 relative to said positioning guide 100. Authentication is performed in dependence on the received user inputs and on the marker, the marker being selected from a plurality of markers, each marker designating a different condition to be met by the received user inputs to be successfully authenticated. The marker may relate to various input conditions such as location of the first symbol of the password, orientation of the password, as offset from the first symbol of the password, and character to be omitted from the password and the use of an alternative password. The password may be used to unlock a mobile telephone or tablet computer using a touch screen interface. The system and method are intended to prevent shoulder-surfing since the viewer will not know the relationship of the entered symbols to the password. |
