Sikuli script is a visual technology that allows users to program and automate graphical user interfaces (GUIs) using screenshots. It works by combining GUI interactions with traditional coding using the Jython programming language. Programmers can write scripts that use images as parameters and variables to control applications without relying on internal APIs. Sikuli scripts are platform independent and can automate tasks on Windows, Mac, Linux, as well as web pages and mobile device emulators. The technology works by taking screenshots of the screen to visually search for and select interface elements to interact with. Some potential applications of Sikuli include automating repetitive tasks, monitoring for specific screen changes, and testing websites against hacking attempts.