I've played a little bit with outslider's draw functions.
The attached script simulates a PIN input. The numbers were shown as a seven segment display. When the script runs as autostart script you have a small protection against unwanted users. Yes, I know this is not really a protection. It's more fun.
In the script parameter you can select a PIN and the LCD width dimension (360 or 480). The script switch in record mode to playback mode. Every wrong input shuts down the camera.
Use up & down for numbers, left & right for position and set for enter.