Yubico YubiKey 5C - Two Factor Authentication USB Security Key, Fits USB-C Ports - Protect Your Online Accounts with More Than a Password, FIDO Certified USB Password Key

The YubiKey 5 NFC is top-tier in its class: excellent security, broad compatibility, and great flexibility in connectivity. If you care seriously about protecting your accounts, it’s a very worthwhile investment. The trade-offs — cost, need for backup key(s), setup effort — are real but manageable, and in my view acceptable for the level of protection you gain.

Secure, cheap and works perfectly.

Unfortunately some providers are still lagging behind with the option to use these for authentication but for the ones that do these are fantastic. Very simple to use, just took a little while to figure out the most reliable place to hold against my iPhone 13 Pro Max. Presumably newer phone models will be less sensitive. Build quality is excellent and gives confidence that it’ll still work when you really need it.

I've been keeping my eyes on YubiKeys for the past few years whilst the technology matures and I think it's fair to say it's gotten to a point where they're "mature" enough. Having ubiquitous on any NFC-support Android support and support in iOS since iOS 13 (though apps may require updating) combined with a growing web presence; now is the time to start grabbing these. Generally setup is fairly easy, following whatever process a website has which is typically clicking a button, tapping the gold disc and giving it a tag. I can see these easily replacing TOTP apps and SMS OTPs in the future: in some cases many businesses are already doing this, an example being Google who has issued all of their employees with a hardware security key! Another benefit of this key comes in a particularly unique way: it's a physical way to identify you're at the PC and secondly even if you were to lose this and someone were to find it - they would have no idea what sites or even what accounts it works for! If you're on the fence due to price: Either nab yourself a Yubi Security Key (which is about half the price at time of writing) or question, can you really put a price on good solid security?

The Yubikey is a very good very secure device but like anything in the IT security world, it takes a while to learn how to use it and set it up and of course the methods vary, depending on your device types. And buy two, you need a spare just in case you lose one. I use Windows and Android so I have the Yubico authenticator app on my phone and use that to access many of my accounts in the traditional way, by adding an authenticator app to whatever account I want to use the Yubikey to access. When the QR code is presented, with the Yubico app open on the phone and in the accounts page, I press the 3 dots top right then add account, scan the QR code and save the account by re-scanning the Yubikey. I DONT input the presented code to the account yet though, I REPEAT the process for my spare YubiKey's first then when I do the last key and the account is added to all the keys, then I complete the process by adding the one time passcode as requested. Easy! On my PC I plug the key into my USB port and input the pin that I setup using the Yubico authenticator app from Windows store, this way I have to physically touch the copper contact on the key to log into whatever account I have setup using FIDO in this case versus NFC that the phone uses. There are plenty of videos on YouTube showing how to set these keys up, it just takes a day or so to get your head around it if you are new to passkeys, but what's a day or so of learning for the extra security these keys give you? Lastly, some of the reviews are concerned about vulnerabilities in the older firmware but the two keys I purchased have firmware 5.7.1 which is the latest firmware. As for one reviewers post about a criminal running a program on your device, that assumes they have stolen the device AND KEY, can get past the device sign in security and also know the pin number for the key too which you should set for NFC and FIDO. If somebody has your phone, can access it, has your key and knows the pin to it, has your accounts and knows the usernames and passwords, vulnerabilities are already a moot point. These are very good devices adding a level of security that is just not possible with other 2FA methods.

This is a great product that will keep your online accounts as secure as possible, but the big issue is that this method of 2FA is only supported by a handful of websites. As it's a more secure method than SMS or authenticator apps, it really should become the standard for all websites - most importantly, banks! So the lack of third party adoption really lets this product down, unfortunately. Not only is a physical key more secure, it is also faster (for websites that implement it correctly) - you just simply tap on it and you're done. No need to dig out your phone and find the authentication code, or wait for several minutes for the text message to arrive. One major let down for me personally is that the YubiKey authentication app does not work on macOS High Sierra (I will buy a new Mac soon with the latest OS, but I can't upgrade this one because I have critical apps on it that will stop working!). I would definitely recommend getting this product though (and another one for backup purposes) as I am sure it will become the standard over time. If you're not sure which one to get, just remember you can also spend a few extra quid on a USB convertor (e.g. USB A to C) and the YubiKey will still work fine. Personally, I went with the USB C type because it seems that USB C is now becoming the standard over USB A, so I wanted to future proof it, but I also had to buy a USB A to C adaptor - no big deal!

I am very pleased with the Yubico YubiKey 5Ci. Shipping was prompt, and the security key arrived well-packaged and protected, with no signs of damage. The dual-connector design—featuring both USB-C and Lightning plugs—was exactly as advertised and ready for immediate setup. In terms of product quality, this YubiKey feels solid and reliable. The build quality gives confidence that it will withstand daily carry on a keychain, and the connectors seat securely into devices without wiggle or looseness. Setting it up with my accounts was straightforward; the configuration steps were clear and compatible with the MFA options in most services I use. Functionally, the key enhances security through hardware-based authentication rather than relying solely on passwords or SMS codes. It supports modern authentication standards such as FIDO2/WebAuthn and U2F, providing a practical second factor for logging into email, cloud services, password managers, and other online accounts that support security keys. The dual Lightning and USB-C connectors make it especially useful for iPhone users and other Apple devices that lack conventional USB ports. Yubico +1 From a value perspective, this security key offers strong protection at a reasonable cost compared with subscription-based alternatives or more complex enterprise solutions. Its broad platform compatibility—covering iOS, macOS, Windows, Linux, and many web services—adds versatility. While not every app supports hardware keys yet, the ecosystem continues to expand, and the YubiKey remains a robust, future-oriented investment in account security. Overall, this is a well-made, dependable MFA solution that combines convenience with significant security benefits, and I would confidently recommend it.

Chegou bem, lacre intacto d chave verifica. Está tudo funcionando perfeitamente

I have used a YubiKey for authentication at work for the past 3 years and while reviewing hardware MFA security keys did quite a bit of research of the various keys out that and the compatibility of the key with different solutions including the ability to authenticate with Windows Hello login, using passkey instead of BIO authentication and this one is one of the few recommended. Additionally, I liked the idea of using it with my cell phone as well and have setup many sites to use passkey authentication including ones like "login.gov" which supports and advocates for passkeys. Tonight I took the YubiKey out of my laptop and authenticated to a web site I had previously setup from my laptop with my mobile phone. I chose "passkey" for authentication then placed the YubiKey against the back of my cell phone with my finger on the touch pad and it immediately authenticated and logged it successfully. Now I can key from both devices once a key pair is setup for a web site so completely portable. You do have to enable NFC from your phone as it is likely off by default. I would buy this again and it works better and is a much easier and more way to login (authenticate) than passwords which are easily compromised. If I knew it was this easy and worked so well before I would have bought it long ago as the FIDO 2 keys have been available for a long time, it is just that many people do not know much about them.

I received this this is value for money product I live in Ludhiana build quality is nice it is plastic but strong plastic