Camera guesture authentication

research on the openCV library and those online source code that uses openCV and provides gesture recognition. Our basic needs for the code: - Able to use the computer's/laptop webcam - Able to convert hand gesture into digital data - Able to output the digital data into readable format (E.g. When we wave 2 at the camera, it is able to output 2, meaning reading successful). Note: Being able to output means we can authenticate the user. I would like this software to be developed for Windows using Java.