Keystone
Keystone 3 Pro
Air-gapped multi-coin signer with three Secure Elements and a 4" touchscreen
Our review
The Keystone 3 Pro is the most credible competitor to Coldcard for users who hold more than just Bitcoin. It signs every transaction by scanning QR codes with the built-in camera and showing a signed QR back, so the device never has to be plugged in. The triple Secure Element design (each EAL5+) and reproducible open source firmware make it a strong pick for security-conscious multi-coin holders.
Best for: Buyers who want air-gapped signing without going Bitcoin-only
Pros
- Three Secure Elements working in parallel
- Fully air-gapped via QR codes and microSD, no USB needed for signing
- Open source firmware with reproducible builds
- IP66 rated, drop-tested to 1.5 m, fingerprint sensor
- Replaceable AAA batteries, no soldered cell
Cons
- Larger than the Ledger or Trezor signers
- Ships from outside the EU, customs apply
- Companion app less polished than Ledger Wallet or Trezor Suite
Specifications
- Display
- 4" color touchscreen
- Connectivity
- USB-C, microSD, QR scanner
- Coins
- 5,500+
- Ships from
- Hong Kong / United States
- Released
- 2024
- Open source firmware
- Yes
- Display
- 4" color touchscreen
- Secure Elements
- Three, in parallel
- Air-gap
- QR codes + microSD
- Power
- Replaceable AAA batteries
- Rating
- IP66, drop-tested to 1.5 m
Ready for Keystone 3 Pro?
Buy direct from the manufacturer for tamper-evident packaging and a full warranty. We send you through our affiliate link.
Buy from the manufacturerSource: https://keyst.one/3-pro
Related models
Ledger
Ledger Nano S Plus
The classic pick for hodling at home
- Price
- 79 EUR ≈ 590 DKK
- Ships from
- France
- Coins
- 15,000+
- Secure Element
- CC EAL6+