I recommend the blue Yubikey because it (a) works, (b) costs <$20 and (c) is impossible to get the wrong model of https://www.amazon.com/Yubico-Y-123-FIDO-U2F-Security/dp/B00NLKA0D8/ref=pd_sim_147_3 …
you can add multiple keys to an account. You also add authenticator codes (TOTP) and printed one-time recovery codes as backup
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I have seen this said but I could not figure out how to add a second to GitHub. I’ll have to try again.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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