Whenever I login to my CentOS6 dedicated server my logs say
su: PAM unable to dlopen(/lib64/security/pam_fprintd.so): /lib64/security/pam_fprintd.so: cannot open shared object file: No such file or directory Jul 12 13:11:07 CentOS-55-64-minimal su: PAM adding faulty module: /lib64/security/pam_fprintd.so
The thing about PAM is that it is tons of modules. Now fprintd is nothing but figerprint module. This on a so called CentOS minimal install.
Just disable it, and you’ll be fine.
authconfig --disablefingerprint --update