SupabaseS
Supabase•2d ago
Vibrant

How to implement cross-device authentication (QR code login) with Supabase?

Hi everyone 👋

I’m working on an authentication flow similar to WhatsApp / Telegram Web, where:

A user is already logged in on mobile

They open the app on another device (browser)

The browser shows a QR code

The user scans the QR code from mobile

The browser session gets authenticated automatically

I’m using Supabase Auth and wanted to understand:

What’s the recommended way to securely link the QR scan to a pending browser session?
I am unable to get any info from docs to get this work securely.
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