It's all start with a friend that has some squashs court's and during covid-19, every people how enters to the club need to sign a swore declaration in paper with a pen.
Whats the consequence of that, we need to take pen to sign a paper.... WHAT? The idea is to get ride off the paper and touching things!
So we planned to have a QR code at the entrance of the club and when you enter, with your cellphone scan that and sign digitally the questions of the swore declaration.
That a "simple" app, so I decided to develop on Quarkus!
The base of the app requirements has:
1.- the Entity (the courts of squash).
2.- the User that is accessing to the club, that must register on it.
3.- And the Swore Declaration to be signed by the User at the Entity.

I have made the app on 4 days, and use KISS (Keep It Simple Stupid) as a premise. The Entities and the Users are store on a database, and the Swore Declaration is a static form that have some questions to answer. The login, no exists, is just a registration form with fields that the Swore Declaration needs like Name, surname and location.

So thas works! testing and deploying. Greats. Everyone is happy.