Yubico - Security Key NFC - Black - Two-Factor Authentication (2FA) Security Key, connect via USB-A or NFC, FIDO U2F/FIDO2 certified

Works brilliantly. Nuff said.

I bought 2 of these as recommended when they came down to a reasonable price point. I set it up on one of my web apps and the USB-A with the touch sensor worked flawlessly across devices including a corporate device. I haven't tested the NFC function yet but I'm not sure I want to use these keys for my mobile device. I might forget the yubikey but as long as my thumb is still on my hand, thats one less thing I need to remember. For me Its worth the peace of mind I need when securing my most critical and vulnerable services, I don't plan on using it for everything - remember there is a trade off between security and usability, you need to weigh up the options and the risks for each app and decide is it worth the extra hassle.I think Yubico should provide a dual pack with differnt stickers (wraps) so you can easily identify which one is your daily driver and which is your backup key.

I have used this and the security is really good in case you need to only put only USB stick for me. I use this and I had no issues. I just needed this to secure all my accounts including anything personal so far no problems.

The yubikey works as expected. The instructions are clear and simple. The device was easy to set up

Brilliant little Fido keys. Work great on the phone for NFC and on the computer using USB.Logging on to secure systems was never easier.

Works well

I bought one 'Yubikey 5 NFC' which works flawlessly. I then realised that I needed a backup key, so bought the 'Yubikey Security Key', which has less functionality, but does have the 2FA for authentication so should work as a backup.I spent a whole evening faffing about with it and I couldn't get it to generate codes, so I sent it back. I left it a while and forgot about it.Recently I had a few attempted security breaches on one of my email accounts, so I decided I'd buy another and retire the authenticator app and use the Yubikeys entirely.Well, another evening faffing around trying to get it work and again I just couldn't get it to generate codes, so I sent that one back and instead bought another 'Yubikey 5 NFC' again. It took me around 30 mins to set it up and it works fine. It generates codes every time, no issues.I don't know what it is with the 'Yubikey Security Keys', but nothing I tried worked, and I tried everything!The full functionality keys work fine once they're set up, but they are a lot more expensive. I managed to get another good deal as I did with my first one.As for the security aspect; there is no 100% secure system, but I feel this is better than an app that is installed on a device that could be compromised and only generates 6 digits. Yubikeys are completely isolated and can generate around 50 digits and can in itself be PIN Code protected, plus all the other security features available on the 5 NFC.I won't go into all that here as some of it I'm still figuring out and probably won't ever need as a general user. Some of the features are for enterprise users for company computers and entry systems, etc.These keys are independent of each other and not linked or cloned in any way, I'll add the new key as an additional one to each account Inhabe that supports them and PIN code it and stash it somewhere safe.

Everyone needs these in today world, so much safer when combined with a password manager. Had setup with mine in 5 mins.