Many people have been using two factor authentication for some web pages through SSL, PKCS11 modules and client side certificates on USB cryptokeys or smartcard

Many people have been using two factor authentication for some web pages through SSL, PKCS11 modules and client side certificates on USB cryptokeys or smartcards for ages. I always find it funny how each new browser and OS release makes it a little more hidden and a bit more convoluted to set it up. All while more and more web developers complain what a big problem secure authentication on the web is.