Yubico - YubiKey 5Ci - Two-factor authentication (2FA) security key for Android/PC/iPhone, dual connectors for Lighting/USB-C, FIDO certified

The product is great. I wanted a physical key that I can carry on my keys and the image above highlights how compact and nicely it fits on there. The appearance is simple and straight to the point.The product itself is really great but the availability of uses is limited due to companies not using it very often.It however is a very quick and simple product which saves you time with accessing your information and other websites. By implying taping your device to authenticate.I find some devices like my MacBook struggle with the connectivity or even the app not working at all.Definitely considering buying this product though, if you care about a secure method and physical key that can backup and keep you safe online.

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.

I can confirm that the yubikey 5c nfc is firmware 5.7.1 as long as you buy from the official yubico dealer on amazon.Works as intended, with the latest firmware you can store more accounts."Is it really necessary though?" I say yes. It's the same thing as wearing a seat belt in a car. Does the seat belt come in use for every drive? No, but when it does need to be used it will save you.Same thing with this. You get hacked and this will prevent hackers gaining access due to requiring the physical key (to an extent, does depend on how heavy you lock down your accounts and your general cyber security level!)I have replaced all my important accounts with 2fa with mostly the yubico authenticator app.Where possible, I have set the 2fa as the security key, however this is very limited and the majority of websites / apps do not accept this. Major websites usually do accept this though, but just check before buying!I recommend buying 2, as to secure your apple account they require at least 2 security keys. This also helps you recover lost accounts if you register 2 keys as one can be a backup.Overall, i do recommend it. It's better safe than sorry when you've got your identity stolen / lost money!!