Security checks at airports, customs, train stations, subway stations, major events, and large venues often raise concerns about personal safety, efficiency, and privacy. As a result, the demand for long-range, contactless, and dignified security solutions has become a key focus in modern society.
Traditional security methods—such as manual checks, handheld metal detectors, walk-through metal detectors, explosive trace detectors, and liquid scanners—have limited functionality, low detection accuracy, and are easily bypassed. Some of these systems also pose radiation risks or are unable to conduct general inspections, making them unsuitable for the evolving needs of smart cities that require efficient, non-intrusive, and high-tech security solutions.
The passive terahertz human body imaging system offers a breakthrough by using passive receiving technology, which emits no radiation and safely detects hidden objects through the unique penetration of terahertz waves into common clothing materials like cotton, hemp, and synthetic fibers. This technology fills critical gaps in current security protocols and serves as an essential complement to traditional measures.
This system has been recognized as a powerful tool in counter-terrorism efforts. On March 6, 2018, the U.S. Federal Transportation Administration and the Los Angeles Metropolitan Transit Authority conducted tests using ThruVision’s passive terahertz security detector on crowded public transport. It successfully identified weapons or explosives carried by individuals. If deployed across subway stations in the future, it could significantly enhance the speed and effectiveness of security checks.
Unlike traditional airport equipment, the passive terahertz human body detector does not require passengers to remove their shoes or clothes. In most cases, people being scanned may not even notice the presence of the device. It emits no harmful rays and does not reveal anatomical details, ensuring both safety and privacy for the individual.
ThruVision employs the world's most advanced terahertz array imaging technology, offering industry-leading performance with the smallest size, lightest weight (24 kg), longest imaging distance (up to 15 meters), and the most stable and versatile applications used in over 20 countries.
Here are six key advantages of the passive terahertz system:
1. **Passive and Non-Intrusive**
The system passively receives terahertz waves emitted by the human body, eliminating any need for physical contact and ensuring no exposure to physiological features in the resulting images.
2. **Safe and Harmless**
It does not emit any form of radiation or energy, relying instead on the natural terahertz emissions from the human body. This makes it safe for both operators and those being inspected.
3. **Compact and Energy-Efficient**
The sensor operates at a center frequency of 250 GHz, with a three-dimensional size of 66 cm x 55 cm x 22 cm and a power consumption of only 90W. The detector weighs just 24 kg—roughly the size of a desktop computer.
4. **Long-Range, Contactless, and Dignified**
It provides real-time dynamic imaging without requiring individuals to stop, with a screening range of 3 to 15 meters, enhancing both efficiency and dignity during security checks.
5. **Comprehensive Material Detection**
It can detect both metallic and non-metallic objects, making it highly effective for a wide range of security scenarios.
6. **Flexible Deployment Options**
The system supports various configurations, including single-unit setup, dual-unit layout, hanging arrangements, vehicle-mounted setups, and embedded electronic door installations.
The technology is already widely adopted in countries such as Japan, the Philippines, Myanmar, Indonesia, India, Georgia, the UK, the US, Afghanistan, Iraq, Saudi Arabia, Vietnam, Thailand, South Africa, and China. It has been deployed in airports, railway stations, financial institutions, customs, military and police facilities, important meetings, and key events—including the 2017 U.S. Presidential Inauguration Ceremony.
With its advanced capabilities and growing global adoption, the passive terahertz human body security system is setting a new standard for modern, secure, and respectful security solutions.
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