Got curious about QR code login so here's my bogus whatsapp login attempt. 😬
Open this url in your computer to attempt to do a QR code login: https://bogusapp.herokuapp.com/web
Open this browser in your phone to simulate a logged in mobile app: https://bogusapp.herokuapp.com/mobile
Using your iPhone Camera or QR Code reader. Just scan the QR code using your iPhone camera or Qr code reader, that should work too.
Q: Why? A: Just for fun.