Biometrics may help solve a problem but they also create a new one.
Tying account access to one small, portable, highly vulnerable device with questionable reliability is an inherently bad idea in my opinion. Lose access to the device for any reason (lost, stolen, dropped, the fingerprint reader fails or the phone simply dies) and you also lose access to your account.
I prefer to simply create decent login credentials and store them only in my head --- not in a app and not in a web browser either. This way, when (not if) my phone stops working, I can immediately switch to an older backup phone without missing a beat.
I keep banking apps off my phone and run them only on an iPad that never leaves home. It's a little clumsier for scanning checks. No biggie.
Of course, the phone has Apple Pay and keychain access ...
The "benefit" of Apple Pay is that by regular use, I am constantly reminded where the phone is. The watch hasn't griped about leaving the phone home when I take a spin around the "estate" here, so I'll check on that today. Matter of fact, neither does the phone when I drive off, leaving the other Apple goodies home.
That's not really how biometric app login works here. Credentials are configured locally and used as an alternative to the existing login method. Nothing changes about how you login with other devices, you can still choose to use your username and password on the device with biometrics enabled even.
Tying account access to one small, portable, highly vulnerable device with questionable reliability is an inherently bad idea in my opinion. Lose access to the device for any reason (lost, stolen, dropped, the fingerprint reader fails or the phone simply dies) and you also lose access to your account.
I prefer to simply create decent login credentials and store them only in my head --- not in a app and not in a web browser either. This way, when (not if) my phone stops working, I can immediately switch to an older backup phone without missing a beat.