Seedkeeper PRO – Ring

€75,00

Matte black ceramic. EAL6+ & FIDO2 certified. Always on your finger.

Seedkeeper PRO Ring is a passkey authenticator, a complete password manager, and an offline 2FA generator. No cloud. No subscription. No compromise.

  • FIDO2 L1 Certified
  • EAL6+ Secure Element
  • Matte Black Ceramic
  • 100% Open-Source

  • Zero Cloud Dependency
  • Personalized in Belgium

Seedkeeper Pro - Ring shot

Beautifully Crafted. Relentlessly Secure.

Seedkeeper PRO Ring is made from matte black ceramic – a material harder than steel, resistant to scratches, and completely hypoallergenic. The finish is deliberate: matte reads as considered, not shiny. Permanent, not flashy. The kind of object that ages well on your finger rather than showing every mark.

The Seedkeeper logo is engraved on the inside of the ring – invisible when worn, present when it matters. A detail for the person wearing it, not for anyone else.

This is what security looks like when it’s designed to be worn.

Three Things You Carry.
One Ring That Replaces All of Them.

Seedkeeper Pro - Illustration - Generate password like a pro
Your Password Manager

Every password you’ve ever created, stored offline inside a certified secure element on your finger. Generated strong, stored safe, retrieved with a tap. No monthly subscription. No server that can be breached. No master password to forget.

Seedkeeper Pro - One ring for your secrets
Your Security Key

FIDO2 Level 1 certified passkey authentication; tap your ring to log into any supported website or app without typing a password at all. Phishing-resistant by design. The same standard used by Apple, Google, and Microsoft, on hardware you can independently verify.

Seedkeeper Pro - Illustration - OTP Codes
Your Authenticator App

Offline TOTP code generation with no network dependency, no phone signal required, no authenticator app to lose when you change devices. Your 2FA codes are generated inside the ring itself, available anywhere, always.

Here Is How It Works

Seedkeeper Pro - Illustration - Ring on finger

01 – Wear It

Matte black ceramic. Sizes US8 through US12 (Help me find my size).
On your finger in the morning, forgotten about by the time you reach for your coffee. Until you need it.

02 – Tap

Hold your finger near your phone. Click “Sign in with passkey,” tap, enter your PIN. Or open the companion app and find the password you need. Or generate the 2FA code for the account that still requires one. All three. One tap.

Seedkeeper Pro - Illustration - Ring on phone
Seedkeeper Pro - Illustration - Rings

03 – Done

You’re authenticated. Nothing was transmitted. Nothing was stored online. Nothing left the ring unencrypted. Your finger goes back to doing whatever it was doing.

€75,00

Everything On Your Finger

FIDO2 passkey login

Tap your ring to log into any FIDO2-supported website or app: no password required, phishing-resistant by design, bound to the legitimate site’s domain.

Password generation and storage

Generates and stores unique, strong passwords for every account, offline, inside the ring’s EAL6+ certified secure element, accessible only with your PIN.

Offline 2FA code generation

TOTP codes generated locally inside the ring – no authenticator app, no phone signal, no network dependency, no single point of failure.

Complete credential storage

Passwords, recovery phrases, sensitive notes – everything that matters, stored safely offline on your finger.

Matte black ceramic

Harder than steel, scratch-resistant, hypoallergenic. Designed to be worn every day, for years. The Seedkeeper logo engraved inside – a detail for the wearer, not the audience.

100% open-source

Firmware and companion app published in full on GitHub, independently auditable, no black box, no hidden server-side logic.

Which Format Is Right For You?

Both PRO formats carry identical security credentials: same EAL6+ certified secure element, same FIDO2 Level 1 certification,
same password manager, same offline TOTP generator.

The choice is entirely about form factor and how you want to carry your security.

PRO Smartcard

Choose the PRO Smartcard if you want the full PRO feature set at a lower price point, use corporate or government smartcard readers, or prefer keeping your security device in your wallet.

€35-

PRO Ring

Choose the PRO Ring if you want your security always physically on you – impossible to forget, impossible to leave at home – and the premium ceramic form factor matters to you.

€75-

Seedkeeper Pro - Illustration - Backup

Already Own a Seedkeeper Device?

Seedkeeper PRO Ring is fully compatible with every Seedkeeper device as a backup – Classic card, Classic ring, PRO smartcard, any direction. Copy the full contents of any Seedkeeper device onto your PRO Ring via encrypted device-to-device communication in a few taps. Your secrets never leave the secure element during the transfer.

A reliable backup solution for now and beyond.

€75,00

Find Your Size

Seedkeeper PRO Ring is available in sizes US8 through US12. Not sure which size you need? Our size guide walks you through measuring your finger accurately at home in under two minutes.

Seedkeeper - Illustration - Ring size

Frequently Asked Questions

What is the difference between PRO Ring and Classic Ring?2026-07-10T11:19:14+02:00

Both rings use the same ceramic material and NFC technology, and both store passwords, recovery phrases, and private notes offline.
PRO Ring adds three things: FIDO2 passkey login (tap your ring to authenticate without a password), offline TOTP code generation (2FA codes without an authenticator app), and the matte black ceramic finish with engraved logo, versus the Classic ring’s shiny black ceramic.
If you want the full authentication suite and the premium finish, PRO Ring is the right choice. If you mainly want your passwords always on your finger, Classic Ring does that at €60.

Is this compatible with Microsoft Entra or other identity platforms?2026-07-10T11:18:34+02:00

Yes. Seedkeeper PRO Ring is FIDO2 Level 1 certified, which means it is natively compatible with any FIDO2-compliant identity platform – including Microsoft Entra, which supports hardware security key authentication as a standard configuration option.
No proprietary integration or additional configuration is required beyond what FIDO2-compatible platforms already support.

What happens if I lose my ring?2026-07-10T11:18:00+02:00

A lost ring cannot be accessed without your PIN, physical possession alone is not enough to read the contents.
For recovery, if you’ve set up a backup device (a PRO smartcard, a Classic card, or any other Seedkeeper device), your full credential set – passwords, passkeys, recovery phrases, and 2FA secrets – can be restored via encrypted device-to-device transfer in a few taps.
Without a backup, a lost ring means the credentials stored on it are not recoverable. Setting up a backup device during initial setup is the single most important step we recommend.

Does it work with my phone and laptop?2026-07-10T11:17:18+02:00

Seedkeeper PRO Ring connects via NFC to any NFC-enabled smartphone,  iOS (iPhone 7 and later) and Android (most devices from 2015 onwards),  using the free Seedkeeper companion app.
For laptop and desktop use, the companion app is also available on desktop, accessible by tapping the ring to an NFC reader connected to your computer.
Note that the ring is NFC-only, it does not support contact/smartcard reader connection. If smartcard reader compatibility is important for your use case, the Seedkeeper PRO Smartcard supports both NFC and contact interfaces.

What is the ring made of?2026-07-10T11:16:30+02:00

Seedkeeper PRO Ring is made from matte black ceramic, a material harder than steel, scratch-resistant, and completely hypoallergenic.
The matte finish is deliberate: it ages exceptionally well with daily wear and doesn’t show fingerprints or surface marks the way polished finishes do.
The Seedkeeper logo is engraved on the inside of the ring. Available in sizes US8 through US12.

Seedkeeper Pro - Illustration - All-in one security device

Everything That Protects You. In One Ring.

Matte black ceramic. Passkeys, passwords, and offline 2FA.

Always on your finger. Always offline. Always yours.

€75,00

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