US Patent 8689294 Systems and methods for managing offline authentication

A method for managing offline authentication. The method may include 1) identifying an attempt, by a user, to access a client device, wherein accessing the client device requires the user to be authenticated, 2) determining whether the client device is offline, 3) in response to determining that the client device is offline, authenticating the user using offline authentication, wherein offline authentication does not require an active network connection with a remote authentication service, 4) upon successful authentication of the user using offline authentication, allowing the user to access the client device, 5) monitoring the network-connection state of the client device, 6) detecting that the client device is online, and then 7) in response to detecting that the client device is online, locking the client device in order to require the user to reauthenticate using online authentication, wherein online authentication requires the active network connection with the remote authentication service.