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FIDO2 NFC Security Key Card
The Cryptnox FIDO2 NFC Security Key Card is a FIDO2 Level 1 certified smart card that delivers secure, passwordless login and 2FA using the latest industry standards.
This ultra-thin security passkey for authentication uses NFC technology to let you log in by simply tapping it on a supported phone, laptop, or tablet—no USB or setup headaches.
Compatible with most modern browsers on Windows, macOS, iOS, and Android, this FIDO2 key is perfect for securing services like Google, Microsoft, GitHub, Dropbox, and Facebook.
Though designed primarily for contactless login, it can also be used with compatible contact smart card readers for added flexibility in desktop environments.
With its tamper-resistant secure element and firmware-level protection, the FIDO U2F security key card ensures strong authentication without compromising portability.
Please Note: This version does not include Mifare Desfire functionality and is not compatible with Linux systems.
Ease of Use!
- FIDO2 Level 1 Certified for Advanced Authentication: Cryptnox fido2 security key is certified to FIDO2 Level 1 standards for strong, phishing-resistant passwordless and two-factor login security.
- NFC Tap-to-Login on Mobile & Desktop: Just tap the card on an NFC-enabled device—no USB, no Bluetooth. Fast and secure authentication on compatible devices.
- Works with Most Browsers on Windows, macOS, iOS & Android: This security keys for two factor authentication is compatible with Chrome, Edge, Safari and others on major platforms. Ideal for securing Google, Microsoft, GitHub, Facebook, and more.
- Optional Contact Reader Support: Our 2fa security key is Optimized for NFC, but also supports ISO 7816 contact smart card readers where required. Flexible for various environments.
- Thin & Portable Smart Card Format: This fido security key is sleek and durable. Credit card-sized to fit easily in any wallet or ID holder—perfect for everyday use or travel.
The Cryptnox Fido Card offers a seamless experience, working right out of the box without the need for software or configuration. Simply tap it on the back of your phone or place it on your smart card reader to start using it immediately. The smart card format enables efficient NFC data transfer. With mobile phones, correct positioning at the back is required - either in the middle or at the very top - depending on your device model.
Designed for seamless integration, this FIDO2-compatible security key supports a wide range of devices, offering unmatched convenience and peace of mind.
The chipset and cryptographic module are certified EAL6+ as per the Common Criteria standards, and FIPS 140-2 Level 3 as per the NIST standards. The device is certified FIDO2 Level1 as per the Fido Alliance standards. The Cryptnox FIDO2 SmartCard is compliant with very high international standards for computer security.
Upgrade your online security with the Cryptnox FIDO2 Key the ultimate solution for passwordless authentication and enhanced data protection for iPhone, Google, Facebook and many more.
Cryptnox Products Specifically Designed for your Needs:
Annavi
Reviewed in Canada on May 5, 2025
After struggling with password management for years, I recently started using the Cryptnox FIDO2 NFC Security Key Card, and it's dramatically improved my online security without adding complexity. This credit card-sized authentication device slips into my wallet unnoticed but offers serious protection for my important accounts.The card is impressively thin yet durable - I've been carrying it everywhere for a couple weeks now, and it shows no signs of wear. What I love most is how straightforward it makes secure logins. No more juggling dozens of complex passwords or hoping my password manager hasn't been compromised. To log in, I simply tap the card against my phone or laptop (anything with NFC capability), and I'm in securely. For devices without NFC, a standard smart card reader works perfectly fine too.The FIDO2 Level 1 certification means this follows rigorous security standards, which matters when you're protecting sensitive information. What's worth considering before committing is that you absolutely need to have a backup authentication method configured. The first day I left home without my wallet, I realized how dependent I'd become on the card for accessing my accounts! Now I've set up backup codes stored in a secure location.Compatibility has been excellent across all my devices - Windows laptop, MacBook, Android phone, and even my friend's iPhone. I've set it up with Google, Microsoft, and several social media accounts, giving me peace of mind that even if someone somehow got my passwords, they'd still need my physical card to access anything important.
popy5
Reviewed in Spain on May 4, 2025
La tarjeta recibida tiene el mismo formato y tamaño que cualquier tarjeta de crédito. Básicamente se trata de una tarjeta NFC (aunque también dispone de los contactos para insertarla en un lector convencional) que está diseñada para poder autenticarse en cualquier sistema compatible sin necesidad de usar contraseñas.Está basada en FIDO2 (que significa Fast IDentity Online 2) que es un estándar abierto desarrollado por FIDO Alliance para autenticación de usuarios. FIDO Alliance es un consorcio de diversas organizaciones tecnológicas, comerciales y gubernamentales entre las que se encuentran Microsoft, 1Password, Amazon, Apple, Dell, PayPal, Samsung, Visa, Mastercard, y otras muchas más.Gracias al uso de credenciales criptográficas resistentes a la suplantación de identidades (phishing), este método de autenticación permite que las personas puedan iniciar sesión en diversos servicios en línea quedando así protegidas, tanto ellas como las organizaciones a las que accedan, frente a los ataques de los ciberdelincuentes.La autenticación sin contraseña FIDO2 se basa en avanzados algoritmos criptográficos para generar un par de claves de paso, una pública y otra privada. Ambas claves no son más que números largos y aleatorios relacionados entre sí de forma matemática. La clave de paso se puede vincular a un único dispositivo de un usuario o incluso, a través de servicios en la nube, sincronizarse automáticamente entre varios dispositivos vinculados al usuario.De momento solo la he probado en un móvil Android ya que no dispongo de un lector de NFC (trabajando a 13,56MHz) para el ordenador. Por la misma razón, el móvil debe disponer del hardware para lectura de tarjetas NFC lo que ya es bastante habitual en terminales incluso de baja gama. Así en los dos móviles con los que lo he probado -un Realme X2 y un Honor 200 Pro-, he accedido a las propiedades del chip interno mediante la app NFC Tools Pro. De cualquier forma, para sacarle el máximo partido es mejor acceder a la web de Crytnox en la que hay tutoriales detallados de cómo se usa en diversos sistemas y plataformas.
Sanver G.
Reviewed in the United States on May 23, 2025
Pros:Certified FIDO2 Level 1 for strong, phishing-proof login securityQuick NFC tap login with no cables or Bluetooth neededWorks smoothly on most browsers and devices including Windows, Mac, iOS, AndroidSupports both NFC and contact smart card readers for flexibilitySlim, credit card size fits perfectly in your wallet or ID holderFully functional and simple to use on the goVery good value for strong securityCons:NFC only works on devices with compatible readersContact reader needed in some environments for full use
Alexandre Révillon
Reviewed in France on May 19, 2025
Très satisfait de cette carte Cryptnox : elle fonctionne parfaitement en NFC avec les appareils compatibles et son format carte de crédit la rend hyper pratique à transporter dans un portefeuille. L'authentification est rapide, fiable et sans effort une fois tout configuré, aussi bien sur ordinateur que sur mobile.Petit point à garder en tête cependant : pour certains comptes comme Google ou Apple, il est nécessaire d’enregistrer deux clés distinctes pour finaliser la configuration. Il faut donc soit acheter deux cartes Cryptnox, soit une seule carte et un autre appareil compatible FIDO2/NFC/USB. Ce n’est pas une limite de la carte en elle-même, mais une exigence de certaines plateformes. À part ça, c’est un excellent produit.
Nobandwidth
Reviewed in the United States on May 18, 2025
I’ve been using the Cryptnox FIDO2 NFC Security Key Card for a couple of weeks now, and while there are things to like, I found the overall experience to be just okay—good enough for basic use, but not without some compromises.The biggest plus is definitely the form factor. It’s ultra-slim and fits perfectly in my wallet, just like a credit card. That kind of portability makes it super convenient to carry around, especially when I’m traveling or working remotely. The tap-to-login via NFC is quick and worked well on my Android phone and a Windows laptop with NFC support. I didn’t need to mess with USB ports or Bluetooth, which is a refreshing change from some bulkier hardware keys.That said, there are a few drawbacks that keep this from being a great all-around solution. First off, NFC-only functionality is limiting if you’re on a desktop or laptop without built-in NFC. Yes, it technically supports contact smart card readers, but those are far less common and not something most people have on hand. If you’re not using NFC regularly, you might find yourself frustrated by the lack of a more universal connection option like USB-C.Also, while compatibility with browsers like Chrome and Safari is solid, setup wasn’t always seamless. A few services took some extra effort to recognize the key, and the documentation wasn’t especially beginner-friendly. If you’re not already comfortable with tech or configuring security devices, it could feel a bit overwhelming at first.Overall, the Cryptnox NFC Security Card is a neat concept that’s great for mobile-focused users who want something minimal and sleek for passwordless or two-factor authentication. But if you’re looking for a more versatile solution that works effortlessly across a wider range of devices and situations, this might not be the most practical option. It works, but there are more flexible alternatives out there.
A.J. Morin
Reviewed in the United States on May 17, 2025
This FIDO2 NFC Security Key Card from Cryptnox is a great way to add more protection to your online and operating system accounts. Once it arrives, you open it, you follow their online tutorial guide on how to use this card properly and as a 2FA or 2nd Factor Authentication for all the operating systems like Windows, Mac, iOS, and Android. You can also use it for your microsoft account, google account and others. I found the tutorial guide and setup to be very easy and intuitive, even though there is a lot of information to take in if it's your first time using one of these types of security keys. One issue is that if you wish to use it as a security key for your Apple ID account you must have 2 of these cards for it to work. The card works great for everything that I used it for, which is for my google accounts, my windows and microsoft accounts, my crypto wallets, and more, and I look forward to use it more after I get a card reader for my PC. They do have an app you can use this for your Crypto Wallet if you want as well.
Customer
Reviewed in the United States on May 17, 2025
The Cryptnox FIDO2 security card is a convenient and straightforward way to add two-factor authentication (2FA) to supported accounts and services. Its credit card form factor makes it easy to carry and use day-to-day, and the technology behind it is impressive.From my experience, setup is quick. With an NFC-enabled device and a compatible account, you can simply follow the on-screen prompts to register it with a tap. There’s an app available for advanced configuration, but it’s not necessary to start using the card. The app worked well for me, and its simple UI was easy to navigate.One thing to keep in mind is that most computers don’t have NFC or card-reading capabilities. If you plan to use this with a desktop or laptop, you may need a compatible card reader.The card itself is well made and sturdy. I expect it to last a while. Overall, it’s a great value and a cost-effective way to improve your digital security.
wisptis.exe
Reviewed in the United Kingdom on May 17, 2025
I went to the Cryptnox website to get everything set up, and was at first distraught that their FIDO2 Management App is iOS only. But it turns out you don't actually need that app at all; things work out-of-the-box if you have the right hardware.I did not have an NFC card reader for my PC, so I picked one up on eBay for about £10 (it was a fire sale, and apparently this model of NFC reader is the most-counterfeited model, so it's possibly a fake? But even if so, it works flawlessly with the card...)After I installed the drivers for the NFC reader, I tested the card using the Cryptnox website's "FIDO2 Testing Site." (You can find the link for this under "Tools" in their "Tutorials For FiDO2 Products" page.) Sure enough, worked instantly.I then tried to set it up for my Windows sign-on, and even Windows gave me the thumbs up. I now have a 2FA card for my Windows sign-in! And it was so easy!I recommend heading to their "Tutorials For FIDO2 Products" page, just so you can see their specific tutorials—the card can be used for Windows Sign-In, Google sign-in, Microsoft sign-in, Shopify, Gitlab, Facebook, Coinbase, Binance, and more... I was quite impressed and grateful that they would provide these tutorials for noobies like me.I plan on purchasing a Bitwarden plan because I believe you need their pro plan to use physical 2FA cards, but with the success of things so far, it's probably going to be a breeze setting that up, too. Quite pleased!
fg.
Reviewed in Italy on May 17, 2025
Ottima come secondo backup di emergenza per PC desktop e portatili per accedere ai vostri account con doppia autenticazione o passwordless fido2 a patto di avere un lettore NFC compatibile. Sebbene il supporto Android sia dichiarato, si prega di notare che esistono alcune limitazioni. Innanzitutto, il supporto per le passkey di FIDO2.1 (ovvero le chiavi residenti protette da PIN) è stato introdotto con Google Play Services v23 e solo tramite trasferimento USB. Ciò significa che:Android supporta le credenziali FIDO protette da PIN solo se è presente Google Play Services.Android non supporta le credenziali FIDO protette da PIN tramite NFC.Solo l'utilizzo non protetto da PIN con NFC(modalità legacy "U2F") funziona correttamente. Tra l'altro ho scoperto che con il software per PC "fido2.1 manager" ( di cui esiste anche una versione Linux ) che trovate su Google potete configurare totalmente questa Fido card anche su Windows . Per un uso quotidiano come primo backup suggerisco l'acquisto di un token hardware con NFC e porte USB-C per uso smartphone Android o Usb-A ( a patto di trovare all'occorrenza un adattatore usb otg funzionante se servisse su smartphone ) per una maggiore compatibilità Fido2.1 con ogni genere di dispositivi. Meglio ancora se provvisto anche di funzionalità totp-hotp integrata con app di autenticazione tipo Yubikeys 5 che comprerei dal sito ufficiale e non da Amazon per essere sicuri che abbiano il firmware più aggiornato o le Feitian E-pass molto più economiche ma con caratteristiche equivalenti ma meno documentazione o le Nitrokey 3 ,opensource e non solo, sempre dai loro siti ufficiali. Oppure la soluzione migliore di tutti per qualità prezzo ,sconosciuta ai più, .. Token2 companion e non aggiungo altro. Cercate su Google.
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