how much data are they supposed to be collecting from inside an android app that basically takes a credit card payment and displays a QR code? Ryanair at one p

how much data are they supposed to be collecting from inside an android app that basically takes a credit card payment and displays a QR code? Ryanair at one point at least had their margins such that every penny a passenger spends other than the ticket was profit, so they actually have less incentive to do this than some of the other carriers.