QR code base authentication process with keycloak in React Native Expo

It’s all about an QR code base authentication process with keycloak. So maybe you can start reading about implementing custom authentication workflows in keycloak. (Authentication SPI).
Maybe you also can look the standard OTP registration / login process in Keycloak.
The new process will be similar – but you will need to implement some custom java plugins for keycloak – and a mobile app / communication

attached see the new requirement.
this is the relevant documentation you need to follow
https://github.com/keycloak/keycloak-documentation/blob/master/server_development/topics/auth-spi.adoc