[Double Authentification]

You have a choice to activate for admin or for the login. That's a good point.

[Double Authentification]

Yes I see this new functionalities, The re is some against and for to use that.

 

The double implement is used by some website including Amazon. Also there so different approach to use it.

I tested on Clicshopping and you must use your smartphone or a tool on your computer to read the qr code.
The implementation is included inside the login and admin access. Not inside the contact, it could be.

 

Also it increase the security to access the data, that's good thing.
After for the customer this is a new step again to do, not the best for a best navigation.