Tech riderRev. 5 Oct 2026
Solo 2
- 1Runs onAndroid, iOS, Linux, Mac, Web, Windows
- 2CostsNot stated by the maker
- 3Authentication standardsFIDO2, WebAuthn, U2F
- 4NFC supportNo
- 5Operating systemsWindows, macOS, Linux, Android
4 lines stated Written from the maker's own pages: solokeys.com
Overview
Solo 2 is ranked #4 of 15 in security keys on Specifiction. It runs on Android, iOS, Linux, macOS, Web, Windows. There is no free plan.
Solo 2 plans and pricing
All plansSolo 2 USB-A Hacker $35 once One-time purchase USB-A · unlocked for custom firmware · no NFC solokeys.com · 5 Oct 2026
Compared on security keys
- Free plan
- Nosolokeys.com
- Paid from
- 34 one-timesolokeys.com
- Authentication standards
- FIDO2, WebAuthn, U2Fsolokeys.com
- NFC support
- Nosolokeys.com
- Device management
- nonesolokeys.com
- Operating systems
- Windows, macOS, Linux, Androidsolokeys.com
Facts
- Product
- Solo 2 is an open source FIDO2 security key designed to protect online accounts from phishing, account takeover, and unauthorized access.solokeys.com · 5 Oct 2026
- Authentication
- It supports FIDO2, WebAuthn, and U2F; basic use requires no software installation or drivers.solokeys.com · 5 Oct 2026
- Touch confirmation
- A capacitive sensor with three contact points confirms authentication when touched.solokeys.com · 5 Oct 2026
- Integrations
- It works with security-key-enabled services including Google, Microsoft, Facebook, Salesforce, GitHub, Dropbox, and Twitter/X.solokeys.com · 5 Oct 2026
- Browser support
- The maker lists Chrome, Edge, Safari, Brave, and Firefox as supported browsers.solokeys.com · 5 Oct 2026
- Passkey storage
- Solo 2 stores credentials and passkeys on the physical key, does not back them up to cloud services, and can store approximately 100 passkeys.solokeys.com · 5 Oct 2026
- Open source
- The maker says Solo 2 is fully open source: software is dual licensed under Apache 2.0 and MIT, hardware under CERN-OHL-S, and documentation under CC-BY-SA 4.0.solokeys.com · 5 Oct 2026
- Attestation
- Standard Solo 2 devices ship with locked firmware and SoloKeys attestation certificates; the Hacker model does not include attestation.solokeys.com · 5 Oct 2026
- Key management
- The solo2-cli tool can manage passkeys, firmware updates, PINs, PIV, and OpenPGP settings; the Solo 2 GUI is listed as coming soon.solokeys.com · 5 Oct 2026
- Limits
- If a user forgets the PIN, resetting the key erases stored passkeys; the guide recommends registering a backup key.solokeys.com · 5 Oct 2026
- Support
- For help with a purchased device, SoloKeys directs customers to its support email or contact form.solokeys.com · 5 Oct 2026
- Intended users
- Solo 2 is presented for everyday users, security professionals, and enterprise teams; Solo 2 Hacker is aimed at developers, security researchers, and makers.solokeys.com · 5 Oct 2026
Company
- Headquarters
- Newark, Delaware, United Statessolokeys.com · 28 Sept 2026
Best Solo 2 alternatives
See all 14 All accessCh 01 Yubico Authenticator Free planAndroidiOS Free to start7.7 All accessCh 02 Token2 T2F2-NFC-Slim AndroidiOS 7.3 All accessCh 03 FEITIAN ePass FIDO-NFC Security Key AndroidiOS 7.2 All accessCh 05 YubiKey 5 Series AndroidiOS 7.2 All accessCh 06 Nitrokey 3 AndroidiOS 7.1 All accessCh 07 SafeNet MobilePASS+ AndroidiOS 7.1
Where it ranks on Specifiction
- Best Security Keys in 2026#4 of 15
Is Solo 2 yours?
Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.
Sources
- solokeys.com/pages/solo-2-guide· checked 5 Oct 2026
- solokeys.com· checked 5 Oct 2026
- solokeys.com/collections/all· checked 5 Oct 2026