I've been thinking about getting a hardware security key and have heard of yubikey before; but I want to see what my options are and if they are worth it in your opinion.
My current setup is a local KeePassXC database (that I sync between my PC and phone and also acts as TOTP authenticator app), I know that KeePass supports hardware keys for unlocking the database.
I am personally still of the belief that passwords are the safest when done right; but 2FA/MFA can greatly increase security on top of that (again, if done right).
The key work work together with already existing passwords, not replace them.
As I use linux as my primary OS I do expect it to support it and anything that doesn't I will have to pass on.
PS: what are the things I need to know about these hardware keys that's not being talked about too much, I am very much delving into new territory and want to make sure I'm properly educated before I delve in.
It runs JavaCard OS, which is developed by Oracle and not open source. Even though it also runs JavaCard OS, I’d recommend the flexSecure JavaCard from Dangerous Things (for the same price as the Apex Flex), because all of its applets are open source: https://dangerousthings.com/product/flexsecure/. It isn’t quite as “seamless”, because it doesn’t have the closed-source app store available for it that the Apex Flex does, but it instead uses open-source applets that you can load onto it. Regardless, either option will run a closed-source OS, but as far as secure verification goes (by using challenge-response instead of static keys which could be read and copied like old RFID tags), JavaCard is currently the best option. And as far as implantable chips go, the flexSecure JavaCard and the Apex Flex are the 2 best chips on the market to my knowledge.
The silver lining is that there are plenty of open source applets you can run on JavaCards (like the flexSecure ones written by Dangerous Things)