The saved approaches Russell reads before he writes SQL. Open one, run it, then confirm it, send it back for review, or retire it. Confirmed and candidate solutions are both offered to him; confirming one lifts its rank, and a needs-review one waits for you.
Your account now requires a second factor. It takes a minute, and you only do it once on this account.
If you lose your phone, one of these gets you back in. Each works once. This is the only time they are shown — we store only a hash, so nobody can look them up for you later.
Enter the six-digit code from your authenticator app.
Enter one of the codes you saved when you set this up. It will clear your current authenticator so you can set up a new one — the code is then spent.