[gmjosack]

The article mentions using Google Authenticator but I'd recommend Duo (Duo Mobile on Android) as it lets you reorganize your accounts, assign icons to various accounts, and only shows the token you care about via expanding with a much larger font. Once I passed around 6 two-factor accounts Google Authenticator became too hard to use.

[tyilo]

Have you tried Authy? How does Duo Mobile compare to that?

[kylequest]

Authy is much more complicated to setup compared to Duo. In my TFA app experiments quite a few people had problems with the setup process (failing to complete it in several cases). They were pretty technical people too, which says a lot about Authy's usability...

[chimeracoder]

There are also a lot of security concerns about Authy that were raised a while back. If you read the comments, it doesn't instill a lot of confidence in the team to implement a secure platform of this sort[0].

Unfortunately, security is one of the few areas in which 90% isn't "good enough" - all you need is one point of failure for an entire system to get compromised.

[0] https://news.ycombinator.com/item?id=4921684