NFC 🧡 Lightning v2

While it doesn't make much sense to write invoices to NFC tags, LNURL opens a whole new world of possibilities when applied to NFC tags: you can enable sending as well as receiving payments just by approaching an NFC tag.

Ideas for potential use-cases

• Tipping (street artists, etc)

• Pay what you want (eggs)

• Gift cards for friends and family

• Onboarding new people during a talk

Examples

• 21 community tutorial

Pros & Cons

✅ Works with ~most wallets
❌ Not every phone has an NFC reader (or it is turned off by default): Make sure to provide some fallback (print a QR-Code or write the Lightning Address next to it)

More on NFC & Bitcoin

• Tapsigner

• Coincorner Card

• BTCPay Server & LNBits

  • https://twitter.com/callebtc/status/1550079109711241216

  • https://twitter.com/thedavidcoen/status/1524000406984142850

  • https://twitter.com/thedavidcoen/status/1547571498725961728

  • https://twitter.com/steepdawn974/status/1548258272632659968

• Links to stickers & cards?

F.A.Q.

• How do you prevent lnurl-w links from being hit multiple times?
  https://mishka-scan.com/blog/secure-unique-nfc