An integrated network security system is provided which permits log-on to a normally locked client on the network in response to at least one coded non-public input to the client by a user. At least a selected portion of the coded input is encrypted and sent to a network server where the user is authenticated....http://www.google.com.tw/patents/US5237614?utm_source=gb-gplus-share專利 US5237614 - Integrated network security system
