Hackernews posts about Yubikeys

Yubikeys is a type of authentication device used to provide an additional layer of security for online accounts by requiring physical possession of the device in addition to a password or other login credentials.

Related: Google  
  1. Protecting Signal Keys on Desktop with Yubikeys (cryptographycaffe.sandboxaq.com)
  2. Yubikey 5.7 (www.yubico.com)
  3. Yubikey Authenticator (avc.mirror.xyz)
  4. Backup Yubikey Strategy (fy.blackhats.net.au)