Symantec VIP Hardware Authenticator - K10S - Two Factor Authentication Security Key - Fits USB-A - FIDO U2F Certified

Use this for work. It's good while it works, but I had 2 of these fail in about 1.5 years. They start failing authentication and after 3 failed attempts I get locked out of the application for 15 minutes. Pro: small, portable, integrates nicely with hardware - USB-A port. cons: see high failure rate above, also USB-A tends to become legacy on more and more laptops/tablets nowadays, shame they don't consider making these USB-C instead. I know they make USB C-A adapters but that quickly becomes cumbersome for a portable solution and introduces additional potential failure points.

I had no problem setting up 2FA with all my favorite platforms, however -- after several weeks, half of them do not recognize the exact same key that was used to authenticate originally. This is not a newbie mistake. By comparison, my other keys work perfectly. The point of having this device is to protect your accounts, but if it doesn't work half of the time.... well... Returning.