--- src/pam_bsdbioapi/pam_bsdbioapi.8	Thu Feb 23 06:15:13 2006
+++ src/pam_bsdbioapi/pam_bsdbioapi.8.orig	Sun Dec 10 06:36:31 2006
@@ -36,6 +36,7 @@
 .Ar pam_bsdbioapi
 .Ar bsp-uuid 
 .Ar backend
+.Op -s
 .Op -f birdb-path
 .Op -m message-file
 .Sh DESCRIPTION
@@ -69,6 +70,12 @@
 This option is required.
 .Pp
 .Bl -tag -width ".Fl m Ar message-file"
+.It Fl s
+Fail without prompting the user to swipe finger if the user has not enrolled
+yet.
+This is useful if only a handful of users has enrolled, but leaks whether the
+given user has enrolled, to whomever tries to authenticate as the user (e.g.
+an attacker outside).
 .It Fl f Ar birdb-path
 Specify an alternative path to the birdb.conf file for backend configuration.
 The default is /usr/local/etc/birdb.conf