Dearg OBartuin

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Hi all,

please visit the popular challenger bank https://web.tide.co/login/ for an example.
Their auth strategy is to present the user with a QR code that changes every 30 seconds (I'm sure this is a representation of some form of hash representing a token). In order for the user to authenticate, they must open the mobile app, authenticate and then scan the QR code via the app. This fires a request back to the provider who then match the two tokens and then authenticated the online website and shows the dashboard.

I am curious how this strategy keeps the login page on the webpage constantly listening for a change in the backend to know for sure the QR code has been scanned from an authenticated device. Are Tide keeping a channel open at their log in page, creating a session cookie and storing it locally. Some scalable and reliable way to return back to the browser from the mobile app.

If you were re-creating this in rails, where would you start?

thanks

Posted in Implement Authentication Service in Rails

I came to the forum for exactly this question.
I do not have the full answer but it would appear creating an Oauth2 service as your auth.site.com app is a good start.

The auth service will act as authorizer to any pre-registered apps such as app1 and app2 etc Chris has some good content on Oauth2 so give those a watch for an intro and then work out your strategy form there.

Posted in Sending Emails with SMTP and Sendgrid Discussion

Hi Chris,

for some weird reason my attempt to send is taking 60 seconds + i'm not getting any error (or anything obviuous), have you experienced this?

```irb(main):004:0> NotificationMailer.welcome.deliver_now
Rendering notification_mailer/welcome.html.erb within layouts/mailer
Rendered notification_mailer/welcome.html.erb within layouts/mailer (Duration: 0.3ms | Allocations: 81)
NotificationMailer#welcome: processed outbound mail in 3.0ms
Delivered mail 5ed7d1bc53d59_5243ff1f6436e6c235e1@Deargs-MBP.mail (60054.4ms)
Date: Wed, 03 Jun 2020 17:37:16 +0100
From: removed
To: removed
Message-ID: <5ed7d1bc53d59_5243ff1f6436e6c235e1@Deargs-MBP.mail>
Subject: welcome to our app
Mime-Version: 1.0
Content-Type: text/html;
charset=UTF-8
Content-Transfer-Encoding: 7bit

<!DOCTYPE html>



<br> /* Email styles need to be inline */<br>


Welcome!



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