5 ms·

Lots of sites use RFC 6238 -- Github probably would too. Then you can just use Google Authenticator (or similar) to manage them.

• mdaniel 13y ago
  I was so disappointed that Twitter's TFA didn't choose to go with the mechanism you mentioned. Is there a compelling reason not to use it?
  • Sealy 13y ago
    Because they wanted to annoy Kim Dotcom.
    • mdaniel 13y ago
      I'm sorry, I don't get the joke. Does he break into people's Twitter accounts?