Application of the Fixed IMSI Catcher System in Transportation Hubs Such as Airports

Transportation hubs like airports, railway stations, and bus stations witness a large flow of people. Criminals often forge identities and alter appearances to move around. Moreover, in dense crowds, malicious incidents—if they occur—will cause adverse social impacts, requiring priority protection. Traditional security patrols and video surveillance still have security loopholes, making the deployment of the Fixed IMSI Catcher System necessary.

Fixed IMSI Catchers are fixedly installed at specific locations to construct an invisible signal coverage area. They can quickly capture mobile phone signals entering their monitoring range, collect key information such as IMSI/IMEI, and aggregate the collected data to a server for AI analysis through a big data platform.

Based on product form, power, and volume, the system is classified into Macro Fixed IMSI Catchers and Micro Fixed IMSI Catchers. Macro Fixed IMSI Catchers have a large coverage area and can be deployed in parking lots and traffic roads outside airports. Micro Fixed IMSI Catchers have a small coverage area and can be installed at various entrances/exits, security check areas, and corridors on departure and arrival floors inside airports.

Key Features and Advantages of the System:

1. Unaffected by weather conditions such as rain, snow, fog, and night, as well as factors like shielding and evasion by illegal personnel.
2. High concealment and not easy to be detected.
3. Simple operation, reliable quality, and easy maintenance.
4. No manual inspection required, reducing labor costs.
5. Strong data analysis capabilities, enabling proactive perception and early warning.
6. Single data items occupy little memory, enabling mass and long-term storage.

Main Functions of the System for Security Control in Transportation Hubs:

1. Real-time and complete collection of mobile phone information within the coverage area of each airport entrance/exit, effectively managing the flow of people at the airport.
2. Meeting the needs of querying and monitoring target objects, and analyzing the accompanying personnel of specific targets.
3. Mapping the activity trajectories of specific targets entering and exiting the airport.
4. Issuing timely warnings when specific targets appear.

The Fixed IMSI Catcher System has been applied in multiple transportation hubs such as airports and railway stations. Its efficient data collection and analysis capabilities have provided data support for numerous criminal cases, and its early warning function has helped law enforcement officers apprehend criminals on the spot many times. Combined with existing airport security measures, the system has greatly reduced the work pressure on law enforcement personnel. Improved security measures make people's travel safer.