Two-Factor Authentication with Node.js
There are a variety of strategies for protecting your important online credentials. We often hear about password managers and generators, but for me, the more important strategy is using two-factor authentication (2FA). Passwords can be guessed, phone numbers can be spoofed, but using two-factor authentication essentially requires that user be in possession of a physical device with an app like Google Authenticator, loaded with a secret key for the given app, which provides an extra layer of security.
I didn't use to take two-factor authentication seriously, until
... read the whole story at davidwalsh.name.