assimilat

https://github.com/nuvious/pam-duress
    A Pluggable Authentication Module (PAM) which allows the establishment of alternate passwords that can be used to perform actions to clear sensitive data, notify IT/Security staff, close off sensitive network connections, etc if a user is coerced into giving a threat actor a password. 

https://github.com/uber/pam-ussh
    uber's ssh certificate pam module 

https://github.com/Yubico/yubico-pam
    Yubico Pluggable Authentication Module (PAM) 

https://github.com/hamzasood/pam_touchid

glnds

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igorw

Go read the blog post.

romansklenar

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