I had a recurring thought in my mind... what if I were to try to make my own QR Codes?! Could they work... ?? I let that thought brew for about 6 months before finally getting down to work trying to figure it out. First I found an app which allowed me to create my own QR Codes which I then translated into stencils to print. It was a challenge because there are a LOT of components, and areas that need to be connected, But in the end... voila, they work! Well some didn't, but it was a learning curve... Overall I am happy with them.