There is a fundamental difference between car GPS positioning systems and mobile car control systems such as Android. The former focuses on vehicle management and GPS data storage and use, but their common feature is that they can both view real-time positions. The author investigated multiple mobile car control software and on-board OBD devices in the market, and summarized the differences between car GPS positioning systems and mobile car control systems as follows:

　　1. The car GPS positioning system requires server support and has a data storage function, allowing users to query historical data such as vehicle trajectories at any time. The mobile car control system cannot.

　　2. The car GPS positioning system has powerful reporting and statistical functions, such as mileage, fuel consumption, driving time, stopping time, etc. over a period of time, while the mobile car control system does not.

　　3. The car GPS positioning system can provide multi-directional vehicle inspection, including mobile phones, computer software, computer web pages, etc., while mobile car control systems generally only provide mobile software.

　　4. The mobile car control system has better real-time interaction performance, such as remote door opening, remote ignition, etc.

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