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Metal Movement Detecting Sensor

SNOOPER can detect a nano level purturbation of the Earth magnetic field, which is produced by the movement of an iron object. SNOOPER is the perfect tip and cue sensor,  and the exclusive solution for detecting the movement of enemy forces in a forest at dark night.


Human movement in a forest

Conventional motion detect sensors (such as PIR, vision, ultrasonic, etc) detect just the movement of an object, therefore if we deploy these kinds of sensors for guarding fence in a forest, the system makes hundreds of misoperation a day because there are plenty of moving objects, such as branches, birds,  wild animals, snows etc.

long distance metal detector SNOOPER

Having the sensor detecting the enemy forces approaching to our bunker in dark night is the long cherished wish for the military. Here is the solution - SNOOPER. The movement of an iron object in a forest must belong to an human. Iron is the tool of human only. SNOOPER does not make a false alarm by wild animals, and it is also not affected by branches, snow, other moving objects unlike a conventional motion detect sensors. SNOOPER can detect the movement of an iron object such as a rifle from 2.5 meters away, and a Hummer from 15 meters away.

SNOOPER - the smallest MAD sensor in the world

SNOOPER originated from the MAD (Magnetic Anomaly Detector) sensor that used for detecting a submarine underwater, which is represented by a SQUID sensor based on the Josephson effect in extremely low temperature.

long distance metal detector SNOOPER

[SNOOPER is the smallest and lightest MAD sensor. ]

A conventional MAD sensor need a very big cooling system using liquid nitrogen, and consumes heavy energy, so it is impossible to deploy these kind of sensors to detect an iron object on the ground. Moreover, MAD sensor costs steeply for ground applications.


MAGO technology completely re-designed the conventional MAD sensor using another principle, and finally made the smallest IoT MAD sensor (SNOOPER) in the world. SNOOPER is composed of special magnetic sensing parts, unique structure of analog amplifier part, hybrid disturbance compensation part and completely novel algorithm of digital signal processing part.


SNOOPER uses very low energy and it can be easily connected to a conventional security system using standard TCP/IP protocols. SNOOPER can be used both of a stand-alone system and an auxiliary metal detecting system.

long distance metal detector SNOOPER

[ Detection distance of SNOOPER ]

SNOOPER can detect the movement of a Hummer from 15 meters away, and a rifle of infantry from 2.5 meters. Just 3 SNOOPERs installed on the path through a forest can block the surprise attack of enemy forces.


SNOOPER is the perfect match with RCWS(Remote Controlled Weapon System). SNOOPER can detect armed forces approaching our military facilities at night, passing troops to a strategic position, which are impossible by conventional sensors. A conventional motion detect sensor makes hundreds of mis-alarm a day, because there are a number of moving object in a forest. A movement of iron object belongs to a human, SNOOPER will catch the exact movement of an human among many movements in a forest.

[ SNOOPER with Remote Controlled Weapon System ]

SNOOPER can be placed under the ground, and is completely passive type sensor, so there is no possibility to be found by enemy's detector. RCWS with SNOOPERs can completely automate the surveillance task, and make it possible to defend a wide strategic area by just a few operators. SNOOPER has no problem in harsh environment such as forest, jungle, desert, etc.


long distance metal detector SNOOPER

[ SNOOPER makes an electrical protection fence ]

SNOOPER can detect the movement of a Hummer from 15 meters away, so one of the SNOOPER can cover up a circle area that has a 30 meters diameter. SNOOPER is the fastest and most efficient sensor for building up an invisible detection fence around important facilities such as a runway or a nuclear plant.


[ SNOOPER-DP  for a school entrance ]

[ sensor signal for a revolver ]

A SNOOPER-DP system can stop the man who has a revolver from entering school. Once school shooting happened, it might be a mass annihilation, and worst of all, victims will be young students and children. We should make an effective solution for protecting our children and students against school shootings.

SNOOPER-DP has a very fast response and a wide area of detection, so it is possible to build up the much faster security check system than a conventional gate type metal detector for the places that has many population or pedestrians.

One of the strong benefit of SNOOPER is ​that people do not feel uncomfortable at all, they even don't know that they just passed a security check system, so it can be used  for various places such as government building, historic site, museum as well as a school. 

Actually SNOOPER is a STEALTH SECURITY CHECK SYSTEM that has the capability of picking up the target person who should be checked manually among many pedestrians.

If a suicide terrorist notices that he was just scanned, then he will press the button immediately. It is very dangerous situation, but using SNOOPER system, he do not know that he has just been detected, so we can earn some time to suppress him in the safer place at the safer time.


In a crowded urban city, we have many kind of magnetic noises, so a conventional precise magnetic sensor cannot be installed in a building because of the noise from an elevator and buses outside etc. Meanwhile SNOOPER-DP system has a special kind of cancellation circuits for the magnetic noise around the sensors, SNOOPER-DP can be easily installed at the entrance of museums, VIP meeting rooms, department stores and wedding places.

SNOOPER can be used for various purposes such as

[ SNOOPER Monitoring View ]

Security Purposes

  • Detecting guns in school, university

  • Detecting guns in public places such as theater, exhibition, museum and etc.

  • Scanning VIP in unnoticeable way

  • Scanning attendance in historic site

  • Scanning attendance to bar, event hall, night club and etc.

Military Purpose

  • Detecting armed forces in outdoor path especially at night.

  • Detecting the movement of enemy forces in forest or strategic positions.

  • Detection terrorists approaching important facility.

  • Guarding near barbed-wire fence.

SNOOPER has a variety of optional interfaces such as USB, LAN, Serial interface, RF communication etc.

Examples of SNOOPER Application

long distance metal detector SNOOPER

Detecting armed forces in outdoor path espaciaaly at night

Detecting the movement of enemy forces to strategic location

Guarding near barbed-wire fence

long distance metal detector SNOOPER

Detecting terrorists approaching important facility

Detecting troops on important bridge

Protecting good citizens from terrorist in public places

long distance metal detector SNOOPER
long distance metal detector SNOOPER

Protecting our children from school shootings

Scanning people in the place of heavy pedestrian traffic

long distance metal detector SNOOPER

Mago Technology


The data’s contained in our company’s web site is by way of general information. No warranty, expressed or implied, is made or intended, nor any liability is or shall be accepted with regards to the said information of any item mentioned in web site. The consumption of our supplied material should be based on the customer’s analysis and while doing so utmost care and precaution as required for a particular use to be taken. Precautions must also be taken in accordance with the information contained in our specifications.

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