Flash, next time please post the right title / explanation and do your homework.
That is NOT a Bitcoin Lightning payment. Is just LNURL LN-auth (LUD-04).
You literally sign / read a QR code and login with your authorized LN wallet. No sats are involved.
Don't mislead your readers, some of them in 2025 still don't know how to use LN and that LN-auth exist
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It's a payment of sats to open the door. 
