A contact management system having wireless telephone interface capability for managing contact information and the contents of a wireless telephone’s phone book memory. The switching input terminal signal is made valid when the signal input terminal voltage is higher than a threshold voltage, such that mode switching using an external control signal is enabled. Bubble brought to the boil by the heat generating member pushes out ink from the discharge port by the pressure exerted by the bubble, while being communicated with the outside. The workflow manager and image services manager are configured for cross-enterprise content sharing such that the system is to locally authenticate a user at the system and the system is to locally authorize a remote request for access to content at the system from a remote user that has been authenticated remotely. The method implements a graduated, progressive series of warnings and responses as the cabin temperature reaches certain designated setpoints, so that security-compromising steps, such as opening windows, can be deferred until less extreme measures have been exhausted.