What is “pam-u2f” Package?

Provides an easy way to use U2F-compliant authenticators with PAM
For more details: https://developers.yubico.com/pam-u2f/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install pam-u2f.

  brew install pam-u2f

Now, use pam-u2f!