I made a toy to detect when I'm touching my face (unconsciously) and make some noise to let me know.
This should reduce transmission of germs if my hands get contaminated.
It uses the laptop camera and pipes it to a ML model with tensorflow JS, and shows the predicted probability of the 2 classes ("Touching" "Not touching").
The model is trained on my face so I'm not sure how it will behave when you use it.
Check out the source code on github and feel free to contribute.