[tzs]

OT: what do people do who sign up for a site from their phones or tablets do when the site gives them a QR code to scan to set up TOTP?

I've only ever signed up for such sites from my desktop, so it was easy to use my phone or tablet camera to get the QR code from my desktop's screen.

How do you scan a QR code that is on your phone's screen using your phone?