Krux

Cold Storage

Open-source, air-gapped Bitcoin signing device that runs on off-the-shelf hardware. Uses QR codes for communication, no wireless connectivity. Perfect for DIY-minded Bitcoiners who want full transparency.

Details

Nfc: No
Usb: No
Type: hardware_wallet
Notes: DIY Bitcoin signing device. No secure element — security via air-gap only.
Price: Free (DIY)
Battery: No
Interface: QR code only (air-gapped)
Price Usd: 50-80 (DIY parts)
Air Gapped: Yes
Device Type: diy_signing_device
Form Factor: DIY open-source device (M5StickV, M5Stack)
Open Source: Yes
Screen Type: LCD
Bitcoin Only: Yes
Connectivity: QR codes (air-gapped)
Manufacturer: Community (open source)
Release Year: 2020
Security Chip: None (open hardware)
Secure Element: No

Links

github

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