How to configure tmux/vlock to accept smartcard pin after session lockout?

Solution Verified - Updated -

Issue

STIG requirements for Red Hat Enterprise Linux require tmux to be installed and configured to lock terminal sessions after 15 minutes of inactivity. After the terminal locks, tmux asks for users to insert password to unlock the current tmux session. We don't have password logins configured through active directory as we are token enforced. How can I configure tmux to ask for smart card pin instead of password to unlock terminal session?

Environment

  • Red Hat Enterprise Linux
  • SSSD

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