They all look fairly similar, but in some cases they have very different features, so I will do my best to point you in the right direction. The blue device on the left is the Yubico Security Key (of which there are now two versions: with NFC and without NFC), and the four devices on the right are the Yubikey 5 Series keys in different form factors. The picture above shows the main security keys that are currently available form Yubico.

Yubico 5 series family plus the Yubico Security Key 2 If you are looking at this article and you have no idea who Yubico are, or what a hardware security key is, then I recommend you read our previous article which should bring you up to speed. I have therefore updated the article below to reflect this. This along with the release of the Yubikey 5 series late last year makes picking up the best key a lot easier. It turns out that Yubico have recently released an NFC version of their Security Key. I hate purchasing a product and then finding out it is either missing a feature I wanted, or there was something better suited to my needs that I missed. There are actually a wide array of hardware security keys available from Yubico, and it can be quite confusing to try and pick out what you do and don't need. Yubico is the market leader when it comes to hardware security keys utilising FIDO U2F and FIDO2 such as the Yubikey, but which one should you buy to suit YOUR needs? Yubico Yubikey – Which Hardware Security Key Is the Best for Me? 7 min read.

Yubico key