How common is two-way authentication for everyday errands in the US?
In Sweden, we have "Mobilt Bank-ID", which works for nearly anything, and it's connected to your social security number. You can have it on your computer as an encrypted file, but the most common way by far is having it as an app on your phone, where you connect a PIN number to it.
Of course, not anything is 100% secure, but security has gotten so much better for the last 5 years, and since you can only connect your social security number to ONE Mobile Phone, it's not possible to log in from two phones at the same time.
All you do is put in your social security number on any website that lets you use Mobilt Bank-ID, and then it asks you to authenticate the log-in on your phone.
Doing your taxes? Log in with Mobilt Bank-ID.
Buying a new video game? Pay through Klarna, a service that uses Mobilt Bank-ID so that all you have to do is log in for it to pay. You don't need to put in card details as it's stored securely.
Checking your bank statement? Log in with Mobilt Bank-ID.
Log into your profile on your ISP's home page to set up a new internet subscription? Log in with Mobilt Bank-ID.
Book a time at the doctor? Log in with Mobilt Bank-ID.
It's so convenient, instead of having to keep track of 50 different passwords and, for your banking errands, different physical log-in devices.
How common is this in the U.S?