Security Keys, Vanguard, Fidelity, Etc.?

[ImCheap]

Does anyone know if Fidelity supports Security Keys such as the one below:
https://www.yubico.com/

Here is some discussion about it at Vanguard:
https://www.bogleheads.org/forum/viewtopic.php?f=10&t=205031

I'm in the process of opening another brokerage account and was leaning towards Fidelity, this would be a very nice option to have I'm thinking.

Anybody care to share any general thoughts about this tech?