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### What is a BoltCard?
A BoltCard is a NFC card with a LNURLw record. You can top it up with sats and use it as a debit card to pay merchants and other users who support this technology.
![This is how it works behind the scenes. ](https://boltcard.org/img/Boltcard-flow.jpg)This is how it works behind the scenes.
![This is how it works behind the scenes. ](https://boltcard.org/img/Boltcard-flow.jpg)
This is how it works behind the scenes.
### What do I need?
- A NTAG424 DNA NFC card
- Here are some vendors who sell them online, some of these offer customisable designs:
- [Bitcoin Txoko](https://shop.bitcointxoko.com/)
- [NFC cards](https://nfc.cards/en/white-cards/46-nfc-card-ntag424-dna.html)
- [NFC-tag-shop](https://www.nfc-tag-shop.de/en/NFC-Card-PVC-85-6-x-54-mm-NTAG-424-DNA-416-Byte-white/69079)
- [Lasereyes](https://lasereyes.cards/buy-now/)
@@ -22,7 +25,7 @@ On your phone with NFC capabilities, go to your LNbits wallet link -> Extensions
- Press the NFC button then bring your NFC card up to your phone to import the UID from your card.
- Click *create card*.
### 3. Write the NFC record to the card
- For this step you will need an app to write the NFC record to your card. I used the official [BoltCard] app.
- For this step you will need an app to write the NFC record to your card. I used the official BoltCard ([Android](https://play.google.com/store/apps/details?id=com.lightningnfcapp) | [iOS](https://apps.apple.com/es/app/boltcard-nfc-programmer/id6450968873)) app.
- On LNbits, show *Card Key Credentials* and then scan the QR code from the BoltCard app or click *Create Link* and paste the auth URL into the BoltCard app.
- On the BoltCard app, click *Write Card Now* and bring the NFC card towards the phone and hold it there until the NFC record has been written onto the card.