small updates to readme

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Pavol Rusnak 2023-03-15 23:36:23 +01:00
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# Bolt cards (NXP NTAG) Extension
# Bolt Cards (NXP NTAG424) Extension
This extension allows you to link your Bolt Card (or other compatible NXP NTAG device) with a LNbits instance on an Android phone (only) and preferable through chrome - and use it in a more secure way than a static LNURLw. A technology called [Secure Unique NFC](https://mishka-scan.com/blog/secure-unique-nfc) is utilized in this workflow.
This extension allows you to link your [Bolt Card](https://github.com/boltcard) (or other compatible NXP NTAG424 DNA device) with a LNbits instance and use it in a more secure way than a static LNURLw.
This is known to work only on Android and the preferred browser is Chrome.
A technology called [Secure Unique NFC](https://web.archive.org/web/20220706134959/https://mishka-scan.com/blog/secure-unique-nfc) is utilized in this workflow.
<a class="text-secondary" href="https://www.youtube.com/watch?v=wJ7QLFTRjK0">Tutorial</a>
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Follow the guide.
The URI should be `lnurlw://YOUR-DOMAIN.COM/boltcards/api/v1/scan/{YOUR_card_external_id}?p=00000000000000000000000000000000&c=0000000000000000`
The URI should be `lnurlw://YOUR_LNBITS_DOMAIN/boltcards/api/v1/scan/{YOUR_card_external_id}?p=00000000000000000000000000000000&c=0000000000000000`
Then fill up the card parameters in the extension. Card Auth key (K0) can be filled in the extension just for the record. Initical counter can be 0.
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- In the TagWriter app tap Write tags
- New Data Set > Link
- Set URI type to Custom URL
- URL should look like lnurlw://YOUR_LNBITS_DOMAIN/boltcards/api/v1/scan/{YOUR_card_external_id}?p=00000000000000000000000000000000&c=0000000000000000
- URL should look like `lnurlw://YOUR_LNBITS_DOMAIN/boltcards/api/v1/scan/{YOUR_card_external_id}?p=00000000000000000000000000000000&c=0000000000000000`
- click Configure mirroring options
- Select Card Type NTAG 424 DNA
- Check Enable SDM Mirroring