Seedkeeper PRO – Card

€35,00

Your password manager, your security key and your authenticator app. Replaced by one card.

Seedkeeper PRO generates and stores your passwords, logs you into websites with a passkey tap, and generates offline 2FA codes – all from a single card the size of your bank card.

In stock

  • FIDO2 L1 Certified

  • EAL6+ Secure Element
  • 100% Open-Source

  • NFC + Smartcard
  • No Cloud, No Subscription
  • Personalized in Belgium

Does This Sound Like You?

Seedkeeper Pro - Illustration - Hardware Secure Element

You Have a Password Manager, a Security Key, and an Authenticator App

Three separate tools to manage your digital security. Three separate points of failure.

A cloud vault for your passwords, a USB key for FIDO2 login, an app on your phone for 2FA codes – each one is a dependency, each one can fail, get lost, or get compromised independently. Seedkeeper PRO consolidates all three into one certified hardware card. One device. One backup to worry about. One thing to lose – and one thing that protects everything else.

Seedkeeper Pro - Illustration - Cloud risk

You Don’t Trust the Cloud With Everything That Matters

Your password manager knows every account you have. Do you know where it stores that information?

Cloud-based tools are convenient right up until they’re breached, subpoenaed, or simply go offline at the wrong moment. Seedkeeper PRO stores nothing online – your passwords, passkeys, and 2FA secrets live inside a certified secure element in the card, and nowhere else. No server. No breach surface. No one else’s infrastructure between you and your own data.

Seedkeeper Pro - Illustration - Open Source

You Want to Verify What Your Security Tools Actually Do

Most security tools ask you to trust them. Seedkeeper PRO lets you check.

Closed-source security software makes a promise: trust us, it’s secure. Open-source security software makes an invitation: read the code, verify it yourself. Seedkeeper PRO’s firmware and companion app are published in full on GitHub – every line of code, independently auditable, no black box.

Seedkeeper Pro - Illustration - Everyday use

You Need Something That Works Everywhere – Phone, Laptop

Your security key works on your laptop. But not your phone. And not the office card reader.

Seedkeeper PRO is a dual-interface card – it works via NFC tap on any compatible phone, and via contact interface in any standard ISO/IEC 7816 smartcard reader. Same card, same credentials, every environment. No adapters, no dongles, no compromises.

Here Is How It Works

Seedkeeper Pro - Illustration smartcard and phone

01 – Tap or Insert

Hold your card near your phone for an instant NFC connection, or insert it into any standard smartcard reader on your laptop or desktop. No cable needed for NFC. No drivers to install for the card reader. It just works.

02 – Authenticate

Click “Sign in with passkey,” tap your card, enter your PIN. Your card handles the rest – generating your 2FA code, signing the passkey challenge, or retrieving your password – inside its secure element, without exposing anything to your phone or computer.

Seedkeeper Pro - Illustration smartcard and phone
Seedkeeper Pro - Illustration smartcard

03 — Done

You’re in. No password typed from memory. No code copied from a separate app. No second device needed. Just your card, doing three jobs at once.

€35,00

In stock

Everything the Card Does

FIDO2 passkey login

Tap to log into any FIDO2-supported website or app – no password required, phishing-resistant by design.

Password generation and storage

Generates and stores unique, strong passwords for every account – offline, inside the card’s secure element.

Offline 2FA code generation

Generates TOTP codes locally – no authenticator app, no phone signal, no network dependency.

Credential and note storage

Store account details, recovery phrases and sensitive notes alongside your passwords.

Dual interface – NFC and contact

Works via NFC tap on any compatible phone, and via contact interface in any standard ISO/IEC 7816 smartcard reader.

100% open-source

Firmware and companion app published in full on GitHub, every line of code independently auditable before and after purchase.

Ring or Card?

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 difference is purely form factor and interface.

PRO Smartcard

Choose the PRO smartcard if you want the lowest entry price into the full PRO feature set, use corporate or government card readers, or prefer keeping your security device in your wallet rather than on your hand.

€35-

PRO Ring

Choose the PRO Ring if you want your authentication always physically on you – impossible to forget, impossible to leave at home – and the wearable form factor is worth the premium.

€75-

Seedkeeper Pro - Illustration - Backup

Already Own a Seedkeeper Classic?

If you’re upgrading from Classic to PRO, your existing Classic card doesn’t become redundant: it becomes your backup. Keep PRO as your daily driver. Keep Classic somewhere safe. Full coverage, both directions.

A reliable backup solution for now and beyond.

€35,00

In stock

What’s Inside the Card

Frequently Asked Questions

Does it work with my phone and my laptop?2026-07-10T10:47:45+02:00

Yes – both, and more. Seedkeeper PRO Smartcard is a dual-interface device: it connects via NFC tap to any NFC-enabled smartphone (iOS and Android) using the free companion app, and via contact interface to any standard ISO/IEC 7816 smartcard reader connected to a desktop or laptop. No drivers, no adapters, no additional hardware required for either connection method.

What happens if I lose my card?2026-07-10T10:46:45+02:00

A lost card 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 second PRO card, a Classic card, or any Seedkeeper ring), your full credential set can be restored via encrypted device-to-device transfer in a few taps.
Without a backup, a lost card 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.

What does open-source actually mean for my security?2026-10-05T22:47:32+02:00

Open-source means the complete code – firmware running inside the secure element, and the companion app on your phone or computer – is publicly published and independently auditable by anyone.

You don’t have to take our word for how Seedkeeper PRO handles your credentials: you can read exactly what happens to your data, or have a security professional review it on your behalf.

For a device that holds your most sensitive digital secrets, verifiable transparency is a stronger security guarantee than a closed-source promise.

Does it work with my existing password manager?2026-07-10T10:39:28+02:00

Seedkeeper PRO Smartcard is a standalone password manager – it doesn’t sync with or connect to existing cloud password managers.
If you’re switching from a cloud manager, you’d export your credentials from your current manager and import them into the Seedkeeper companion app, which then stores them on the card.
The companion app guides you through this process. Once migrated, your passwords live only on the card – your old cloud manager can be cancelled or kept as a temporary reference during the transition.

How is this different from a regular security key?2026-10-12T23:11:36+02:00

A standard security key handles FIDO2 passkey authentication… and that’s it.
Seedkeeper PRO Smartcard handles FIDO2 passkey login, offline TOTP code generation, and complete password management in one device.
It also stores recovery phrases, SSH keys, API keys, and sensitive notes. Where a standard security key is one function in your security setup, Seedkeeper PRO Smartcard replaces the entire setup and it’s 100% open-source, so you can verify how it does all of it.

Seedkeeper - Illustration - Pro smartcard and functions

Stop Juggling.
Start Tapping.

One card. Password manager, passkey login, and offline 2FA.

Fully offline, fully open-source, fully yours.

€35,00

In stock

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