bitcoin

[DIY] Open-source Bitcoin signing device for less than 25 bucks

Satochip_

Interesting!

Would this work for example with the [BoltCard](https://bitcointalk.org/index.php?topic=5399120.0)?, it has an [NXP NTAG 424 DNA](https://www.nxp.com/products/rfid-nfc/nfc-hf/ntag-for-tags-and-labels/ntag-424-dna-424-dna-tagtamper-advanced-security-and-privacy-for-trusted-iot-applications:NTAG424DNA) chip.

I mention this because it's [much cheaper](https://www.coincorner.com/buytheboltcard) at £4.99 compared to €25,00 per Satochip