Right, Gruber's theory is poorly supported. He should detail a "fake" software UI scenario that the side button protects against, because I'm not seeing a single one.
A fake pay button couldn't do anything more with the Apple Pay system modal UI than present it. It can't trick you into completing it. The side button click adds nothing. The side button doesn't stop it from presenting a fake payment UI. And furthermore the App Store is a first party app so requiring the side button there can't possibly be to protect from nefarious apps.
A better theory is they just want total UI consistency. Since they need to use the side button for in-store Apple Pay, that wins for the App Store and in-app purchases as well. But even that doesn't quite make sense either, because then why are they requiring it for installing free apps?
Comments
Right, Gruber's theory is poorly supported. He should detail a "fake" software UI scenario that the side button protects against, because I'm not seeing a single one.
A fake pay button couldn't do anything more with the Apple Pay system modal UI than present it. It can't trick you into completing it. The side button click adds nothing. The side button doesn't stop it from presenting a fake payment UI. And furthermore the App Store is a first party app so requiring the side button there can't possibly be to protect from nefarious apps.
A better theory is they just want total UI consistency. Since they need to use the side button for in-store Apple Pay, that wins for the App Store and in-app purchases as well. But even that doesn't quite make sense either, because then why are they requiring it for installing free apps?