Beginning Firebase - Part 21: Online User Count | Ray Wenderlich

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You've learned how to get a list of currently online users. Your final challenge in this course is to display a user count to the end user.

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/4203-beginning-firebase/lessons/21
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Hi Brian,

I want to be able to reject a connection when a user is already logged in (to avoid using the same email and password on multiple devices) what would be your suggestion ? How to approach ? Thank you.

Alex

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@vegetarianzombie @bdmoakley Can you please help with this when you get a chance? Thank you - much appreciated! :]

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Looks like there are many ways to do it. Here’s a good stackoverflow answer that addresses your concern:

I hope that helps!

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Thank you @bdmoakley!

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