Looking for someone to help dissect an app. Or a group effort.
https://play.google.com/store/apps/details?id=com.thecommonsproject.smarthealthcardverifier
I dont know how legal this is, but this is the app they are using to scan the vax passes in canada. Having a look under the hood would be cool, at the least.
if it uses wifi instead of mobile data you could just look at the traffic if your modem is good enough