> It doesn't have any more information than the info you give it to buy the tickets in the first place.
Many apps ask for permission to use your GPS position and other sensor data, even though they don't need it. Most non-technical people don't understand what that means and will just allow it.
I have absolutely never in 15+ years of having an iPhone had an app ask for GPS or sensor data when it clearly wasn’t necessary for functionality like a maps app or Uber.
What is clearly necessary? I have had a supermarket app (on Android, I do not know the behaviour of the Apple app) ask for location to direct me to their click and collect point, but then keep requesting location data afterwards.
Many apps ask for permission to use your GPS position and other sensor data, even though they don't need it. Most non-technical people don't understand what that means and will just allow it.