Earlier quoted context omitted.
There's no laws banning this in any European countries that I'm aware of, except maybe Hungary? It's just banks being stupid, consumer-hostile, and anti-competitive.
Well, I've built a bunch of mobile banking apps and we did detect if the phone was rooted, was in dev mode, etc. and it is not because we were "stupid, consumer-hostile, and anti-competitive". If someone steals the secrets from a rooted phone and steals customer's money the bank is on the hook, so banks do everything they can to minimize this risk. There is no way to store customer's secrets in a PC browser securely,…
There's no way to assess the security of a rom from an app and it's about time that banks learn this reality.
Software on mobile is even more fragmented and less standardized than on desktop