25 sats \ 0 replies \ @DarthCoin 10 May 2022
Damn it boomers! Now you have no excuse to use LN!
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10 sats \ 1 reply \ @cointastical OP 10 May 2022
The full thread, unrolled:
Thread by @thedavidcoen on Thread Reader App
https://threadreaderapp.com/thread/1524000406984142850.html
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20 sats \ 0 replies \ @cointastical OP 10 May 2022
The How-To:
Send payments with a NFC tag and a BTCpay Server POS
https://github.com/theDavidCoen/LightningNFC/blob/main/README.md#send-payments-with-a-nfc-tag-and-a-btcpay-server-pos
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20 sats \ 0 replies \ @pseudozach 11 May 2022
capitulate to lnurl already. it's lightning magic.
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20 sats \ 2 replies \ @jeffgoldblum 13 May 2022 freebie
This is a really cool idea and an awesome new project to try out.
The BIG downside I see with this is that whoever can read the contents of the NFC chip, has access to the LNURL-withdraw link and can thus drain the entire node's funds.
Am I seeing this correctly or am I missing something?
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0 sats \ 1 reply \ @cointastical OP 13 May 2022
There's a maxWithdrawable value, so I'm guessing the card can be configured to be used X times and up to N sats per transaction.
I think. I pretty much only know LN in general, and am not very familiar with LNURL specifically,
Maybe someone else seeing this and knows the answer can pipe in.
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20 sats \ 0 replies \ @jeffgoldblum 13 May 2022 freebie
If so, this means that still anyone could pull X*N sats in total. Like this the implementation doesn't seem to be usable in the real world yet. There would have to be some security mechanism in place to make a payment link non-reusable.
Even entering some sort of PIN doesn't seem to be a fitting solution as this PIN — once entered into a POS terminal — could then be used with the respective LNURL-withdraw link to pull funds as one pleases.
If someone more knowledgeable could clear up any mistakes I made in my reasoning, I'd really appreciate it.
Any ideas yet on how to overcome these issues?
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1 sat \ 0 replies \ @cryptocoin 18 May 2022
The video from this Tweet is also available on Youtube:
Offline Lightning Network payment from a NFC card thanks to BTCpay's LNURL NFC Support plugin
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