Eh, that’s a bit pedantic. I knew someone who worked for a bank in the late 80’s - early 90’s, and I distinctly remember them having a little keychain dongle t

Eh, that’s a bit pedantic. I knew someone who worked for a bank in the late 80’s - early 90’s, and I distinctly remember them having a little keychain dongle that generated one-time codes every (30? 60?) seconds for secure remote login. The product may have been an RSA SecurID, or something else. Branding aside, it’s the same concept as modern TOTP. The main novelty of the TOTP RFC was standardizing the setup / secret sharing process and algo.