Open Source Choice
USB-RP2350-FIDO2: Open Source Security Key
Powerful and affordable FIDO2 key based on the newest RP2350 microcontroller. Fully compatible with Google, GitHub, Microsoft, and other services.
from $8.50 $30.00 -73%
Key Features
- RP2350 Chip: Hardware crypto acceleration (ECC P-256)
- FIDO2 & WebAuthn: Secure passwordless login
- Open Source: Fully open firmware and hardware
- Clone Protection: Secure Boot and OTP zone
- Compatibility: Windows, macOS, Linux, Android, iOS (via adapter)
Specifications
- Standards
- FIDO2, CTAP 2.1, U2F
- Cryptography
- ECC P-256, secp256r1, ed25519
- Interface
- USB-A / USB-C (via adapter)
- Memory
- 520KB SRAM + OTP
⚠️ Device for advanced users. Fully FIDO2 compliant, but may require configuration for some enterprise environments.
FAQ: Questions and Answers
What is this device?
This is a USB FIDO2 security key designed for secure account protection using hardware authentication. It works according to FIDO2 / WebAuthn standards and acts as a physical passkey for logging into compatible services.
Is this a YubiKey or Yubico product?
No.
This is not a YubiKey and not a Yubico product. The device is a functional alternative to YubiKey, as it supports the same FIDO2 standards, but it is built on a different hardware platform.
This is not a YubiKey and not a Yubico product. The device is a functional alternative to YubiKey, as it supports the same FIDO2 standards, but it is built on a different hardware platform.
What does 'based on Raspberry Pi RP2350' mean?
RP2350 is the microcontroller used as the hardware foundation of the key. It handles USB communication, cryptographic operations, and system interaction. 'Raspberry Pi' refers to the chip platform, not the manufacturer of the finished device.
Does the key work via a USB-A to USB-C adapter?
Yes.
The key works correctly via a passive USB-A to USB-C adapter if your computer or laptop only has USB-C ports. The FIDO2 protocol does not depend on the connector type; it only matters that the adapter supports data transfer (not just charging).
The key works correctly via a passive USB-A to USB-C adapter if your computer or laptop only has USB-C ports. The FIDO2 protocol does not depend on the connector type; it only matters that the adapter supports data transfer (not just charging).
Which systems and services is it compatible with?
The key works with all services that support FIDO2 / WebAuthn, including:
- Google, Microsoft, GitHub, and others
- Windows, macOS, Linux
- Browsers: Chrome, Firefox, Edge, Safari (with FIDO2 support)
Can I use a regular USB flash drive instead of this key?
No.
A regular USB flash drive cannot replace a FIDO2 key because it lacks hardware cryptography and secure authentication protocols.
A regular USB flash drive cannot replace a FIDO2 key because it lacks hardware cryptography and secure authentication protocols.