Keystone is a hardware wallet that signs transactions fully air-gapped via QR codes (no USB/Bluetooth), pairing with mobile/desktop apps. Its open-source firmware and isolation appeal to security-focused self-custody users.
Key Facts
| Item | Details |
|---|---|
| Type | Air-gapped hardware wallet |
| Connectivity | QR codes (no USB/BT) |
| Firmware | Open-source |
| Pairs with | Mobile/desktop apps |
| Keys | You hold them |
Pros & Cons
Pros
- Fully air-gapped (QR) signing
- Strong isolation/security
- Open-source firmware
- Large touchscreen
Cons
- Hardware purchase required
- QR workflow learning curve
- Self-custody responsibility
Summary
Keystone is an air-gapped QR hardware wallet that maximises isolation from online threats. A top pick for security-first self-custody.