Computer security processes include displaying information elements on a computer display screen. Some of the information elements are mapped to corresponding parameters. The computer security processes also include receiving a selected information element from the information elements displayed on the computer display screen, and determining a value of a parameter associated with the selected information element based on a condition. The value of the parameter is changeable according to changes in the condition. The computer security processes further include comparing the selected information element with the value of the parameter, and upon determining the value of the parameter matches the selected information element, providing a user with access to a system resource.