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.