Trimble launched the CrossCheck GSM 1900 mobile communicator, which uses the wireless Global System for Mobile Communications (GSM) Personal Communication Service (PCS) cellular network. The CrossCheck expands the cellular GSM PCS coverage in the United States, Canada and South America. In addition, CrossCheck sends GPS data and messages from the mobile unit to a base station, can be adapted to virtually all fleet applications, and when interfaced with FleetVision can provide total asset management solutions, such as real-time display or alarm reporting. (Trimble, Sunnyvale, Calif.)