That way there's zero chance of losing access to all 3. YubiKey 5C GTIN: 5060408461488 Single 55 USD Tray of 50 2750 USD Add to cart Opt for greater flexibility with subscription, compared to a one-time purchasing model.
I use 3: one that never leaves my office, one that never leaves my home, and one that I keep with me. YubiKey 5C YubiKey 5C Nano YubiKey 5 NFC Most USB type C to USB type A adapters can be used with a supported YubiKey Unsupported USB devices Most USB mass storage devices and some scanners and printers use data transfer types, including control, interrupt, and bulk. I recommend a minimum of 2 one stays with you on your keychain while the other can remain at home or in your office. Get a couple of keys and try to keep them in different places. Email, at least, needs to be absolutely secured, as an email compromise will allow a SIM swap which gets around SMS authentication. As an IT professional, I generally tell my clients that SMS 2FA gets you 90% of the way there TOTP (Time-based One Time Passcodes) gets you 99% of the way there and hardware keys are as close to 100% as you can get. To the best of my knowledge, there is no way around a hardware key unless the user up and bypasses it themselves. : Yubico YubiKey 5 Nano - Two Factor Authentication USB Security Key, Fits USB-A Ports - Protect Your Online Accounts with More Than a Password.
There are now inexpensive "toolkits" that allow the bad guys to set up phishing attacks that get around all forms of 2FA.
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