FIDO Card - Fido2 Certified - Security Key for iPhone - NFC Communication - Passwordless or 2FA authentication - FIDO2 (CTAP2) & U2F(CTAP1) (Black)

Worked perfectly with my iPhone. I like the plain white card. Nice low key s2fa security.

Everything works.

I couldn’t be happier with the Cryptnox FIDO Card! This security key is a game-changer for my online safety. With FIDO2 certification, it delivers exceptional protection, and the NFC communication feature works flawlessly with my iPhone. I love the flexibility of using it for both passwordless logins and 2FA authentication. It’s compact, stylish, and super easy to use. If you’re looking for a reliable way to secure your accounts, I highly recommend this product!

This is my first time using a security key like the Cryptnox FIDO Card, and it works really well. It’s designed for iOS and works perfectly with all my devices. Very easy to use — I didn’t even need instructions. If you want to test it, you can go to their website. Great option for extra security without the hassle.

Cryptnox FIDO Card - Fido2 Certified - Security Key - Price when reviewed £ 26.99 Despite the description saying this card is compatible with Android, I cannot make it work. This is not helped by the absence of instructions from the manufacturer. The app seems to fail to register the card on my phone, but I'm unsure if it's the app, the card or user error.

Size and shape of a credit card. No identifying marks on the card to show what it is, although to an extent a completely blank card, does indicate it is a security key of some sort. I have put on a credit card sticker you can place on the front of cards to both personalise them and to anonymise the cards front. Setting up was simple and straight forward on an IOS device against the apple account. As with most apps or services you want to set this up for it is where the options for setting two factor authentication are. Once setup it works simply via the NFC reader and positioning the phone is the same as for Apply Pay or reading Smartcards (such as Oyster, Train Companies or Credit cards). This does support both FIDO2 (CTAP2) and U2F (CTAP1). Some banks and credit card companies may not support FIDO2 so having legacy support for U2F is useful. The one thing I hadn’t considered is that when you set up using a FIDO2 card, many services do not allow concurrent use of authenticator apps. I am concerned about what happens if I lose/misplace this card and will do more investigation before I fully switch over to using FIDO2 cards.

With the increasing acceptance of passkeys and other passwordless security methods for various services, security keys like this one offer a potential alternative to on-device solutions like fingerprint authentication. I recently tried out this security key from the Crypto company Cryptonox. The security key itself resembles any other credit card, except that it lacks any printed information Setting up the security key is relatively straightforward on an iOS device once you’ve located the corresponding on-phone menus. While it’s not a major surprise given the lack of cross-device support, it would be beneficial to have such support. Most phones interact with the card using NFC, which reads it quickly. However, you may need an additional adapter or a built-in reader to use the chip or NFC on a laptop. Overall, if the security key works with your setup, it’s an excellent addition to enhancing your overall security. However, ensure that you have all the necessary components before initiating the setup process.

With passkeys and other passwordless security methods being accepted for increasingly large numbers of services, security keys like this one are a potential good alternative to using on device solutions like fingerprint. I checked this one out from Crypto company Cryptonox. Set up first and this is relatively straightforward on an iOS device once you've found the on phone menus though I didn't manage to get it to work with Android - not a huge surprise given it's not promised but it would be useful to have cross device support. Most phones will interact with the card with NFC which reads it quickly though you will likely need another adapter or a built in reader to use the chip or NFC on a laptop. The card itself is similar to any other credit card though with nothing printed on it. Overall then if it works with your set up it's a great option to add to the overall security, however make sure you have everything you need before you get started.

Cool little piece of tech to have on you. Paired with the reader will be a hit and miss on some or if not most sites as all websites support fido2 differently.

La he usado para iniciar sesión en varios servicios y la experiencia es sólida: la autenticación FIDO2 responde al instante y elimina la dependencia de contraseñas débiles o repetidas. El formato de tarjeta resulta cómodo de llevar y el NFC facilita el uso con móviles y portátiles sin puertos disponibles. También funciona por contacto, así que cubre bien distintos escenarios de acceso. La detección es estable y no he tenido fallos al registrar la llave en cuentas de Microsoft o Google. La construcción transmite buena durabilidad y el chip responde siempre a la primera. Para quien quiera añadir una capa real de seguridad sin complicar el flujo de trabajo, es una herramienta directa y eficaz.

Really flakey reads with an iPhone 14 Pro, works most of the time but I wouldn’t rely on it for anything super critical personally.

I recently bought the FIDO2 Security Key and it's been a great addition to my digital security toolkit. Right off the bat, I loved how I could easily slip it into my wallet, thanks to its card-like form factor. Setting it up was a breeze, and I had it working with my Google and Facebook accounts in no time. The advanced security features give me peace of mind, knowing my accounts are better protected against phishing attacks. However, I did run into some trouble when trying to use it with my Android device—it didn't always work smoothly, but it was flawless with my Microsoft and Apple devices. Overall, the convenience and enhanced security it offers make it a worthy investment, even with minor compatibility hiccups. If you're looking for an easy-to-carry and robust security key, this one won't disappoint.

Schlicht und einfach, für meinen Anwendungszweck genau richtig.