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There is no banking app for authenticating transactions for desktops?
Web browsers.
Edit: Nevermind, I don't know what this even is.
At least in the EU web browsers don't allow for authenticating transactions (beyond a limit of e.g. 30€). Either an additional authenticator app or a standalone card reader is mandatory.
Luckily my banking apps work flawlessly on GrapheneOS and even microG, likely because of they care about the bootloader being locked again.
I guess I don't know what you mean by "authenticating transactions".
Online transactions require a second factor which displays the actual amount to be transferred. This works by either an app which receives the transaction data (recipient, how much) over the network, or a device which takes the bank card and is used to scan something similar to a qr code. The device then displays the transaction data.
This makes sure a fraudulent site can't easily change the amount or the recipient of a transaction, even if they somehow made an identical website (or close enough).
For remote transactions (e.g. online payments), the security requirements go even further, requiring a dynamic link to the amount of the transaction and the account of the payee, to further protect the user by minimising the risks in case of mistakes or fraudulent attacks.
https://www.ecb.europa.eu/press/intro/mip-online/2018/html/1803_revisedpsd.en.html
It's not perfect, especially with people using a banking app and the second factor app on the same device for convenience sake.
Interesting. If they do that in the US some day, I would absolutely much rather buy that device than unroot my phone.
Not for authentication. No idea if this is not a thing, but banks here in Germany all have their weird proprietary TOTP app that checks if your device is rooted or now even if it is a "Google certified OS".
You can use some weird hardware device instead with the obvious drawbacks.
My favorite thing is when banks don't allow passwords that have spaces in them or are more than 12 characters long.
Honestly there should be a standard of what security means, like how passwords are stored and how TOTP is implemented, and if a bank doesn't implement it then THEY are responsible for any "identity theft" that happens on their site, not the users.
Looking at you, fucking Paypal.
Or yes, my bank wanting only numbers not even letters.
Literally the only passwords I dont have in Firefox.
all have their weird proprietary TOTP app
But don't support standards like WebAuthn or even FIDO 2.
Your browser?