[zxcvbn4038]

This is why you don’t do feature detection with the user agent header, but someone needs to tell that to the 800 lb gorilla. In this case though I’m not going to be too harsh because Mozilla wasn’t exactly tripping over themselves to implement U2F support - I think it took them 2-3 years, and I still can’t use a key with any of my IOS browsers (which I think are all just window dressing for apple’s html widget, so blame that on Apple).

Web site support that uses the feature on any browser has been slow also. Robinhood is the only financial app that I’ve found that even supports TOTP. My E-trade account still requires a hardware token with a little lcd screen on it - paging Captain Marvel.