This is another aplication of hand tracking module.
To run:
python3 virtual_painter.py
The project offers the user to select a color between Red, Green, and Yellow, and paint on the canvas and later remove it too. All of this happening in real-time. When the index finger and middle finger are up one can select a tool from the canvas toolbar and later can use this with the index finger.
This tool can be helpful in online classes to explain a concept.