If you use Multi-Factor Authentication, you'll be well used to scanning in QR codes which allow you to share a secret code with a website. These are known as Time-based One Time Passwords (TOTP). As I've moaned about before, TOTP has never been properly standardised. It's a mish-mash of half-finished proposals with no active development, no test suite, and no-one looking after it. Which is…
