Is there a device to detect mobile phones?

1. It is best to turn off the phone, at present, except for the military-grade detector of anti-espionage and anti-reconnaissance, there is no instrument that can detect the mobile phone that has been turned off, but it can basically be detected; It has a certain effect relative to the start-up, which varies from detector to detector.

2. If the mobile phone has airplane mode, basically all MTK domestic mobile phones have this function, the airplane mode is mainly used on the plane, it is the state of power-on, but there is no communication network transmission and reception, that is, you can't send text messages, make **, turn on the airplane mode, and the instrument can't detect it.

3. Conductive metal objects will also have interference, but only interference, after being detected the mobile phone, it is said to be the key, there is a certain chance of missing the heart eye or free may be let go, so the mobile phone can be put into the iron box and so on.

It is a metal detector that detects according to the eddy current principle in electromagnetic induction, and can detect as long as it is metal, including coins and keys.

Only by not bringing a mobile phone or ensuring that the mobile phone is more than a certain distance away from the detector can you avoid being detected. Scanning only the vicinity of the thighs and the upper body is to check whether there is a mobile phone in the pocket; There are watches nearby, and there is a little metal on the pants, and the inspector knows about it, and will try to avoid getting close to them during the inspection, so as not to call the police.

You can consult this kind of cigarette detection instrument from Shaple Selling Electronic Technology, where they specialize in all kinds of long-range detection instruments.

Our pharmaceutical factory purchased two sets of cigarette detectors from them, which detect the molecular frequencies of nicotine and tar in cigarettes, with high sensitivity and accurate detection. Every day at work, at the gate of the factory, detect whether the workers are carrying cigarettes, afraid that they will be brought to the factory to smoke, afraid of accidents, with these two sets of instruments, this problem is solved.

Oh, there shouldn't be, but there should be instruments that can detect and emit electromagnetic waves, just like those uncles or sisters hold after the airport security gate.

Detect the signal from your phone!

Ways to shield your phone from a metal detector:Tools Raw materials: oppor15,.

1. First of all. We turn on the phone, next, we click to open the phone settings, <>2, next.

In the phone settings interface, we click to open the other settings button, <>3, Next.

In the other settings interface, we click on the Open Developer Options button, <>4, Next.

In the developer options settings screen, we will turn on the switch to enable strict mode, <>5, and finally. After we turn on the switch, we click the home button at the bottom to return to the desktop of the phone, at this time, our phone is blocked by the signal, and we can also block the metal detector.

1.Needless to say, the best thing to do is to shut down! At present, except for the military-grade detector of anti-espionage and anti-reconnaissance, there is no instrument that can detect a mobile phone that has been turned off!

2.If your phone has airplane mode (basically all MTK domestic phones have this function). The airplane mode is mainly used on the aircraft, which is the boot state, but there is no communication network to transmit and receive, that is, you cannot send text messages or make **.

The flight mode is turned on, and the instrument does not detect it.

3.Neither Bluetooth transceiver nor WiFi WAPI networks can be detected because they are both frequencies. Therefore, turn on Bluetooth to transfer files or send text messages in airplane mode (don't say you don't know that Bluetooth can send text messages), or turn on wifi Internet access in airplane mode, on QQ, it is okay and cannot be detected (but it seems that our school hotspots are difficult to find...).

4.It is said on the Internet that the radio can play a jamming role, the radio FM frequency band is 88-108MHz, and the AM is 535-1605kHz, so it seems that although the radio is not in the frequency band of the instrument, it will have a certain interference effect, but it is minimal.

5.Conductive metal objects can also interfere, but only interference, if you say it's a key after being detected on your phone, the teacher has a certain chance that you will miss your eyes or be free to let you go. Therefore, the Internet says that you can put your mobile phone in a tin box and so on.

6.Putting it in a real insulated shielding box definitely works, but this is no different from turning on airplane mode, but it is troublesome to put it in the box.

7.The frequency band of the walkie-talkie is allocated to public security: 350MHz; Coast: 220mhz; Amateur: 433MHz; Cluster: 800MHz; So you should know about the walkie-talkie.

TV included: 100-800MHz).

The above I am aiming at the analysis of a very high-end type of instrument, if our school uses very general or relatively low-end goods, then many cases can not be detected! But let's be foolproof!

I personally recommend shutting down the computer directly over the direct shortcut key to switch into airplane mode!

Summary. Kiss hello <>

Metal detectors identify metal objects by detecting changes in the electromagnetic field generated by them. Because mobile phones contain metal components, it is easy to mistake them for metal objects when using metal detectors. To avoid this, you can try the following:

1. Put the phone in an anti-magnetic bag, which can prevent the metal detector from detecting the metal components in the phone. 2. Place your phone in a metal-free bag, such as a plastic or paper bag. 3. Place your phone in a place where it is not detected, such as a table or box at a certain distance from the metal detector.

4. Turn off your phone's radio signals, such as Wi-Fi, Bluetooth, and mobile data, as these signals will also be detected by metal detectors. <>

How can a metal detector not detect the phone.

Kiss hello <>

Metal detectors identify metal objects by detecting changes in the electromagnetic field generated by them. Since mobile phones contain metal components, it is easy to mistake them for metal objects when using metal detectors. To avoid this, you can try the following:

1. Put the mobile phone in an anti-magnetic filial piety bag, which can prevent the metal detector from detecting the metal components in the mobile phone. 2. Place your phone in a metal-free bag, such as a plastic or paper bag. 3. Place your phone in a place where it is not detected, such as a table or box at a certain distance from the metal detector.

4. Turn off your phone's radio signals, such as Wi-Fi, Bluetooth, and mobile data, as these signals will also be detected by metal detectors. <>

In short, in order to prevent the metal detector from misidentifying the mobile phone as a metal object, you can try to put the mobile phone in an anti-magnetic bag, a random bag that does not contain metal or a place that does not accept detection, and turn off the radio signal rubber of the mobile phone. <>

How can I prevent the mobile phone detector from finding the mobile phone? To prevent the detector from detecting the phone, it is better to choose a plastic phone. Since the metal is inevitably detected, you can find a cover and put the phone in the metal thermos cup, even if the thermos cup is detected and poured down, who would have thought that there is another mystery inside. Generally speaking, the metal detector is more valuable, it may be a signal detector, which is easy to do, just shut down or go offline, if you only have a handheld metal detector, you can put it on the sole of the shoe or something.

If there is a security gate. The MCD security gate alerts you. Don't try it.

It's impossible to hide from the rough grandson of the past. Another solution is: Buy a watch-style phone.