Making the NFC capability available to third parties does not necessarily threaten the security of your data though.
not really. now the entire phone ecosystem, incl. the operating system and their secure enclaves are trusted to a single entity. if that entity is compromised, your entire data on that device is compromised. so that is a huge amount of trust.
now if any bank can access the NFC subsys with its own app, you just open up the possibilities for infiltration. if the banking app is compromised, your data on that part is defenseless. if the OS ecosystem is compromised, the same applies.
but i give your this: it is enough to have one bogus NFC-capable app to basically get access to any NFC capable peripherals. so in theory the device can just try to interact with its surroundings without you knowing. is this impossible? absolutely not: developers are smart, they already found many ways to overcome certain artificial limitation to the various privacy subsystems. due to the sheer numbers apps get submitted to the app store (of any other platform) sooner or later one will pass through. one should never ever allow any low-level access to hw.
also - albeit this is just a totally convenience issue - i have no idea how a phone, which is capable to host multiple NFC-capable wallet apps will react if its getting near to a terminal. with apple wallet, you can just choose one from the many cards you registered there as default. if there are 'competing' apps from multiple different banks, what happens then? who'll be the first?
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something tells me that this ruling is in favour of the banks and not the customers. god they must be pissed they have to give a cut to apple to be able to get access to the desirable customer base.The future isn’t government micro-regulating the tech industry either.