In this example, the application's logon procedure has 2 steps. The first step requires user's static password, i.e. the AD password:

Once the user has entered the correct password, the user is challenged with Grid on Screen in the second step:

The user would click anywhere in the grid, e.g. N6

The, the user would navigate in the grid by following his or her secret path, e.g. down-right → up-right → right → down-right:

The passcode generated is: 5cnm