A USB security key built on RP2350.
Open-source FIDO2 firmware for the Seeed Studio XIAO RP2350.
Explore the sourceA PIN. A physical confirmation.
Case print downloadsTunnlix Key brings passkeys to a device you carry with you. Connect it over USB-C, enter your PIN when asked, and press the button to sign in.
The same key can hold credentials for different accounts. Each service gets its own credential, so you can carry one device between computers without copying those credentials to each machine.
Use a passkey on supported websites and apps, or register the key as an extra sign-in method where the service offers it. Your PIN unlocks the key; a physical press confirms you are there.
32 discoverable passkeys, plus sealed credentials that do not use those slots.
Use the key with OpenSSH for server access. The supported
ecdsa-sk and ed25519-sk key types
bring the same physical confirmation to an SSH session.
ES256 and Ed25519 support in the RP2350 firmware.
View stored passkeys, update their account details, and remove ones you no longer use through a compatible credential manager. Set your PIN and adjust its minimum length.
PIN retry limits and permission-scoped authorization are built in.
Start with a Seeed Studio XIAO RP2350, a normally open button, and a USB-C cable. Build the firmware, connect the button, and finish it with the printed case below. The source is MIT licensed.
Print the base, top, and captured button in PETG.
