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+pam_timestamp — Authenticate using cached successful authentication attempts
+
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+DESCRIPTION
+
+In a nutshell, pam_timestamp caches successful authentication attempts, and
+allows you to use a recent successful attempt as the basis for authentication.
+This is similar mechanism which is used in sudo.
+
+When an application opens a session using pam_timestamp, a timestamp file is
+created in the timestampdir directory for the user. When an application
+attempts to authenticate the user, a pam_timestamp will treat a sufficiently
+recent timestamp file as grounds for succeeding.
+
+OPTIONS
+
+timestamp_timeout=number
+
+    How long should pam_timestamp treat timestamp as valid after their last
+    modification date (in seconds). Default is 300 seconds.
+
+verbose
+
+    Attempt to inform the user when access is granted.
+
+debug
+
+    Turns on debugging messages sent to syslog(3).
+
+NOTES
+
+Users can get confused when they are not always asked for passwords when
+running a given program. Some users reflexively begin typing information before
+noticing that it is not being asked for.
+
+EXAMPLES
+
+auth sufficient pam_timestamp.so verbose
+auth required   pam_unix.so
+
+session required pam_unix.so
+session optional pam_timestamp.so
+
+
+AUTHOR
+
+pam_tally was written by Nalin Dahyabhai.
+