I’m actually searching for an alternative to yubikey if possible with NFC for my smartphone (but not necessary if I can use on my smartphone with an OTG cable), the thing that bug me with yubikey is that it need to connect to “yubicloud” but i’m very privacy minded and it can leak information especially if do sensitive stuff over tor…
I’m very new to all these thing can I use a smart card as an alternative ? (amazon smart card reader) and what about nitrokey (100% opensource) ?
If i want to use theses stuff its specially to protect me against bruteforce against full disk encryption of my device (smartphone, my computer encrypted with dm-crypt/lucks)
thanks for your advice guys !