Trying to create a paper piano

Trying to create a paper piano

I came across many paper piano projects where they detect finger and paper touch using opencv and some even use neural network but the problem still remains that it's not accessible for everyone. Some people still don't have computers or even laptops. So I thought about a paper piano project that uses only the mobile phone and itscamera and using a cheap phone stand to set the correct angle and a printed paper. So a mobile phone which most people have, an app to download for free and a mobile stand with a printed paper which altogether costs approx $ 2.5. The reason for this post is that I may not work on this project anytime sooner so if anyone wants to work on this project help yourself and if you come across some references or a project similar to this then add it in the comment.

https://redd.it/1uslas1
@r_cpp