​important​ Get into a good habit of saving and protecting backup codes, just as you would your password or your 2FA device. Do not just download the file and leave it in your downloads folder, or just skip saving them altogether. Treat these backup codes like the spare key, and protect it the same way you would your normal key. Copy them into your password manager or print them out and keep them stored somewhere safe that others can’t access, like a locked file cabinet or safe.