Abstract: A method and apparatus for a network based customer service is provided. In response to a client requesting help, a menu including three levels of interaction is displayed. One level of interaction is self-help searching in a database of information. A second level of interaction is asynchronous help, requesting help and receiving a reply. The third level of interaction is synchronous help, interaction with an advisor. If the client selects synchronous help, the method includes the steps of alerting the advisor and displaying a list of previously visited sites by the client to the advisor. The synchronous help method further includes providing a synchronized display between the client and the advisor, such that the advisor sees an identical display to the client.

Abstract: A position tracker uses an inertial angular measurement system, for measuring orientation and linear translation of a helmet on a human head for the synthesis by a host computer of virtual, directional audio over headphones sensors mounted on the helmut, includes a roll gyro sensor, a pitch gyro sensor, a yaw gyro sensor, an absolute roll tilt sensor coupled to a first universal signal conditioner, an absolute pitch tilt sensor coupled to a second universal signal conditioner, and an absolute yaw compensator. A data acquisition system is coupled between the sensors and the host computer for converting analog signals from the sensors into digital, angular orientation data. Each of the gyro sensors includes angular velocity detectors and solid state electronic devices connected to provide angular velocity signals at a given sample rate.