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50 sats \ 2 replies \ @Satochip_ OP 4h \ parent \ on: [DIY] Open-source Bitcoin signing device for less than 25 bucks bitcoin
For the more adventurous, you can find compatible JavaCards for just a few dollars. However, be cautious—it's a bit of a jungle, and often the cards sold don’t actually meet the advertised specifications.
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0 sats \ 1 reply \ @OT 3h
Is there a recommended retailer?
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0 sats \ 0 replies \ @Satochip_ OP 2h
Avoid Alibaba. It's a jungle.
Satochip sells blank javacard - but not necessarily the cheapest. At least it works well with the default keys. Also selling the SIM-card form factor for a very small form-factor hardware wallet.
Here are a few reliable javacard version: J3R180, J3R200...
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