⚡️🚪 WATCH - Unlocking a door with a Bitcoin Lightning payment.
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Good morning Flash, that's awesome
Love to see it. We need to build more Bitcoin secured buildings.
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Good morning SuperJohn
I saw it a long time ago...
You can do it yourself. 😎👍
LNbits Shop
Switch kit / ESP32 Hacker Kit - LNbits Shop
This kit includes everything you need to build a basic bitcoinSwitch and use it with an externally powered device. Included in the kit are: 1 x ...
you know what a no-coiner would ask?
I know:
"was it locked?"
Neat!
Nice!
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That's awesome! Who is making the module? I would love to try it
So you need a smart lock that is connected with WiFi.
Bad for your health. Dependent on electricity. Easy attack vector.
Just use a key.
"No its okay! The door has a key as a backup!"
Then what even is the point??? Jesus, some people increase their attack surface area for literally no good reason.
Cool idea but there's 0% chance I'm spending sats to unlock my own door.
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I mean why not just use a authenticator app, and Bluetooth.. With esp32.
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
It's a payment of sats to open the door. 
Then the device was wrongfully designed. You can do that with a simply LN-auth.
what if the purpose is to charge an entry fee?
I think keeping sats flowing into the direction of the owner of the door is a good thing. It's also a signal that the person can enter and is a member of the club.
It also shows that micro payments are practical and as Bitcoin increases in value those payments are essentially mining the foot traffic.
Keeping the sats flowing means that they are keys to entry for anyone buying a small amount. It's useful.
Because nearly every Bitcoin person had lightning... Even a Cash App user can access this. I'm fact cash app does free lightning payments.
That video is 2 years old, is from PlebLab Austin. They were doing some tests with Lnbits bitcoin switches.
I think they put it to the door just as an exper:ment. It doesn't make sense to charge your own tenants an entry each time you pass that door.
By definition a tenant will be charged for using the space.