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加拿大Seimac  
Seimac在過去的25年多中一直為世界各地提供專用于貨柜、貨車、野生動物、泊岸輪船和浮標的跟蹤技術。其車隊信使跟蹤器（FleetMessenger）是應用互聯網，透過一臺可隨時加裝在儀表板上的PalmPilotTM手掌電腦和一臺GPS終端機讓貨運工人能夠直接回應車輛調度指令。

Seimac was founded in Bedford, Nova Scotia by Joe Seiler and Hugh MacPherson, two retired combat systems engineers from the Canadian Navy. Over the years, the company evolved from being an electronics consulting firm to a world leader in the design and manufacture of specialized radios for mission-critical applications. Products included: Cospas-Sarsat beacons, a range of miniaturized ARGOS satellite radio transmitters used in tracking objects and animals in marine and terrestrial applications, GOES satellite transmitters, Spread Spectrum Radio Modems, and VHF radio and optical beacons.

In January 2007, Seimac Ltd. and Orion Electronics Ltd. amalgamated to create Cobham Tracking & Locating Ltd. Together with its UK subsidiary, Micromill Electronics Ltd., Cobham Tracking & Locating has more than 80 years of experience designing, manufacturing, delivering and supporting quality products.