Hardware wallets compared: Ledger, Trezor and Keystone
This comparison draws on official product documentation from each manufacturer. We examined publicly stated security architecture, connectivity, firmware transparency and companion software. Products were not hands-on tested and features may change; check each manufacturer's current pages before purchasing.
Last updated:
This page may contain affiliate links in the future. Any commercial relationship will be disclosed and will never affect contender order or findings. This is not investment advice. Do your own research before purchasing any product. Products listed here were not hands-on tested; findings are based on official documentation reviewed on the dates shown.
Known limitations
- Products were not hands-on tested; all claims come from manufacturer documentation.
- Pricing is not compared because manufacturer pricing varies by region and model and may change.
- Supported cryptocurrency counts are not compared because manufacturers report them differently and the numbers change frequently.
- Security certifications were noted where stated by the manufacturer but not independently verified.
Comparison at a glance
| Criterion | Keystone | Ledger | Trezor |
|---|---|---|---|
| Open-source firmware | Yes (manufacturer states open-source) | Not assessed in the cited evidence | Yes (fully open-source) |
| Secure Element chip | Not assessed in the cited evidence | Secure Element design stated | Not assessed in the cited evidence |
| Air-gapped operation | Yes (QR code only) | Not assessed in the cited evidence | Not assessed in the cited evidence |
| Companion software | Not assessed in the cited evidence | Ledger Live documented | Not assessed in the cited evidence |
Keystone
Keystone documents air-gapped QR-code transaction signing and publishes Keystone 3 firmware source in its official GitHub organisation.
Verdict: Documents air-gapped QR-code transaction signing and publicly available Keystone 3 firmware source.
Pros
- Air-gapped QR-code signing is documented
- Keystone 3 firmware source is publicly available
Cons
- Complete hardware and companion-software trust were not assessed
- Supported assets and workflow should be checked before purchase
Evidence
Ledger
Ledger describes its hardware wallets as using Secure Element chips and Ledger Live as the companion application for managing supported assets.
Verdict: Uses a Secure Element design and the Ledger Live companion application. Readers should verify the connectivity, supported assets, and security design of the specific model under consideration.
Pros
- Secure Element design stated
- Ledger Live companion application documented
Cons
- Connectivity varies by model and should be checked before purchase
- Security claims here come from manufacturer documentation and were not independently tested
Evidence
Trezor
Trezor publishes firmware and hardware design repositories through its official GitHub organisation.
Verdict: Provides public firmware and hardware design repositories. Readers should assess the security design, connectivity, and supported assets of the specific model under consideration.
Pros
- Firmware source is publicly available
- Hardware design files are publicly available
- Official repositories can be independently inspected
Cons
- Security design varies by model
- Connectivity and supported assets should be verified for the chosen model
Evidence
Decision guide
Open-source vs. Secure Element
Keystone publishes Keystone 3 firmware source, Trezor publishes firmware and hardware design repositories, and Ledger documents a Secure Element design. This comparison does not rank these approaches or independently test them.
Connectivity: USB, Bluetooth or air-gapped
Keystone documents air-gapped QR-code signing. Connectivity for Ledger and Trezor was not assessed in the cited evidence; check the exact model documentation before purchase.
How we assessed this
Every claim is sourced from the manufacturer's own official product pages or documentation and dated. Contenders appear in alphabetical order. No product was hands-on tested. Information may have changed since the observation date; verify on the manufacturer's site before making a purchase decision.
Research basis: Official manufacturer product pages, security documentation, and companion software pages reviewed on the dates shown. No hands-on testing was conducted. No affiliate or commercial relationship influenced the selection or ordering of contenders.
Contenders appear alphabetically. Findings are evidence-led and scoped; missing information remains unknown rather than becoming a negative score. Products were not hands-on tested. Affiliate disclosure & methodology →
Sources cited
- Keystone: Keystone states its hardware wallets are '100% air-gapped' and use QR codes for transaction signing — https://keyst.one/why-keystone (observed )
- Keystone: Keystone publishes the Keystone 3 firmware source in its official GitHub organisation — https://github.com/KeystoneHQ/keystone3-firmware (observed )
- Ledger: Ledger explains that its hardware wallets use Secure Element chips to isolate and protect sensitive operations — https://www.ledger.com/academy/security/not-all-chips-are-born-equal (observed )
- Ledger: Ledger Live is described as the companion app for managing crypto assets across Ledger devices — https://www.ledger.com/ledger-live (observed )
- Trezor: Trezor publishes hardware design files in its official GitHub organisation — https://github.com/trezor/trezor-hardware (observed )
- Trezor: Trezor publishes its firmware source in its official GitHub organisation — https://github.com/trezor/trezor-firmware (observed )