Security key recommendations?

FlavoredScrabble

I'm looking for recommendations for hardware security keys, and I was wondering what the opinion of the GrapheneOS community is. Preferably, I want it to be open source and work with GrapheneOS. Here are ones I was able to find:

Nitrokey
SoloKeys
OnlyKey
YubiKey (proprietary)
Titan Security Key (proprietary)

If there are any security concerns with any of those options, please let me know.

schweizer

I think you should start with the form factor or interface. You can have USB C, USB A, NFC, Lihgtning or a combination of those. Without USB you can have a flat card or a finger ring.

Then it's also about your additional requirements such as PIV or PGP.

argante

I use Nitrokey. It's not ideal. On the desktop, a hardware password manager is a nice plus. I don't use Nitrokey with GOS though. Pixel has a built-in Titan M chip. Instead, on GOS I have KeePassDX, which has some support for Titan M to unlock the database. Additionally, I have KeePassDX integrated with the autofill service, so I don't have to copy passwords (it's not secure). Yubikey probably has the best support.