Some modern laptops are equipped with a fingerprint reader, which allow user to authenticate in a more comfortable way than typing a password. Please make policykit compatible with this authentication method using a fingerprint reader.
This already works fine provided you have the right PAM module. In Fedora 15 it works out of the box, see e.g. http://davidz25.blogspot.com/2011/02/gnome-3-authorization.html
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