Today, I just saw an announcement by Google that they are releasing a feature for their Google Apps customers which allows users to receive a push notification on their phone for Multi Factor Authentication (MFA) [1].<p>For a long time now, I have been thinking about creating an app which would allow users to receive a push notification on their phone in order to provide the MFA code directly to their browser (via a browser plugin). It could work with any current site which requires a MFA code that can be generated from an authenticator app on your phone.<p>Would you use such an app? Would you pay monthly for the push notifications feature and for developers to maintain/add new site integrations? Why or why not?<p>Also, which authenticator app do you currently use and are you happy with it? Previously, I used the Google Authenticator app [2], but I recently started using Authy [3] and the UX is dramatically better IMO. I'm asking to get a sense of which features are important to developers who use these apps on a daily basis (AWS, GitHub, etc).<p>Thanks!<p>[1] https://googleappsupdates.blogspot.co.uk/2016/06/new-settings-for-2-step-verification.html<p>[2] https://support.google.com/accounts/answer/1066447?hl=en<p>[3] https://www.authy.com/app/