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Comment by pg_bot | Hacker News Reader

There is the "nano" version available which is a lot smaller than the one advertised. The ones that I own have held up just fine for the past year on my keychain.

https://www.yubico.com/product/yubikey-4-series/#yubikey-4-n...

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This size is much better, but I assume it lacks the "touch" protection against remote attacks, like the other ones?

I still wonder about the exposed connector - what its durability. After all, I would like for such a tool to serve me for years fault-free.

I personally have the nano version.

> but I assume it lacks the "touch" protection against remote attacks

It has the touch protection. There is a small strip of metal that protrudes beyond the USB port that you touch.

> what its durability

I've used it daily for about a year. Granted this is not "years" but so far it still feels very solid.

Sounds good then. I am ready to test one of them. Thanks!

Forgive my ignorance, but could you explain what "touch" protection is please?

In order for it to work you have to have it plugged in and touch it. Prevents a virus from talking to it unless it prompts you to touch it somehow.

They’re pretty sturdy. I’ve used my keychain version to pry off beer caps, and it’s gotten some scratches but works fine. The touch sensor is kind of annoying but it does work.

Do previous YubiKeys support FIDO2? From the post, I assume you need one of the new ones.

They plan to support it on "additional keys", whatever that means:

https://twitter.com/Yubico/status/993923882829529088

The NEO and 4 series support U2F which can be used for FIDO2 2FA (emphasis on 2), but they do not support the passwordless (device PIN) or username-less login scenarios.

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