With the approach of the session, the number of students worrying about their fate begins to go through the roof. At the same time, the demand for devices that help not quite honestly, literally dictated to pass exams and tests, is also growing. In particular, magnetic earpieces, the dimensions of which are literally a few millimeters, are especially popular.
Principle of operation
The capsule magnetic earpiece is a miniature device that fits directly into the ear canal and transmits sound. It is absolutely impossible to notice such a device in the ear.
Initially, magnetic earplugs were designed for use by people with hearing problems. However, the real scope of the device turned out to be much wider, because there are many situations in which a person may need to secretly receive information:
- public speaking to large audiences;
- undercover security officers;
- gambling, when the game is not entirely fair;
- business negotiations in business;
- passing exams by students.
The peculiarity of this type of earphone is that it must be installed directly on the eardrum. The earphone itself is a round washer with a thickness of 1 to 3 mm or an elongated capsule with a diameter of up to 3 mm.
The operation of the device is based on the principle of electromagnetic induction.
Sound is transmitted using an induction loop - a ring of wire, worn around the neck and generating an electromagnetic field. The earpiece, falling into this field, begins to resonate, transmitting vibrations directly to the eardrum. The earphone does not require a power source to operate, but an additional battery is connected to the induction loop itself to amplify the vibrations.
What does the kit consist of?
For the functioning of the earpiece, the following set of devices is required:
- mobile phone for communication;
- induction antenna cable with a jack for connecting to the phone and a socket for the battery or battery;
- new battery or charged battery;
- earpiece;
- device for installing and removing the earphone from the ear.
It should be understood that such a kit has a low degree of ease of use. If the speaker in the ear is invisible, then the design of the wire, battery and phone must be hidden under clothing, which is not always an easy task.
Therefore, to ensure greater ease of use and increased secrecy, a magnetic wireless earpiece was developed by specialists, whose induction antenna Bluetooth module made it possible to simultaneously establish communication with the phone, which was hidden somewhere in the bag, and also provide power to the entire system.
Another feature of wireless kits is that to communicate with the interlocutor, you do not need to use an adapter with a microphone to place it in a convenient place. A highly sensitive microphone can either be already integrated into the Bluetooth module of the device, or be remote.
Safety precautions
It should be understood that objects placed independently in the ear canals can cause irreparable harm to the hearing organs.
The main danger is the eardrum - the thinnest membrane, the irritation of which is strictly prohibited. As a result of the use of earplugs, the eardrum can receive various kinds of damage, which will lead to hearing loss, perforation of the membrane.
Most often, the membrane is damaged at the time of trying to remove the earpiece from the ear canal.
If the device is stuck in the ear canal, in no case make new attempts to get it and urgently seek medical help from a specialist.
In order to avoid unpleasant consequences, you should adhere to safety regulations when using the earplugs:
All surfaces of the device installed in the ear canal must be absolutely clean and free from contamination.
Before using the earpiece, ensure that the ear canals are hygienic.
It is recommended to carry out a training on installing and removing the device, checking audibility. In case of discomfort, pain, it is necessary to remove the device from the ear canal - in this case its use is prohibited.
It is also forbidden to use earplugs in the presence of chronic hearing diseases.
Terms of use
Connecting an induction antenna will not cause any difficulties even for a person holding the device in his hands for the first time.
If you are using a wired kit, just plug the plug into the headset jack of your phone. The bluetooth magnetic earphones are connected in the same way as any wireless headset. It is enough to synchronize the devices, and they are ready to work.
Using directly the earpiece has its own nuances.
Installation is as follows:
- the head is thrown back so that the ear into which the earpiece will be installed is directed upwards;
- the earphone is inserted as deep as possible into the ear canal using the complete clip;
- after loosening the clip, the earpiece falls on the eardrum.
At the last stage, a sensation of congestion may appear, which passes after some time. The device is considered ready for operation if no complications arose during the installation process.
Removing the earpiece is only possible with the complete tool with a magnetic tip. The instrument is carefully inserted into the ear canal until a characteristic click of the magnetized earpiece is heard. After that, the tool is also carefully removed.
Advantages and disadvantages
The device has several advantages:
- stealth during operation;
- purity of transmitted sound entering directly into the auditory canal;
- simplicity and reliability of the design;
- a sensitive microphone allows you to communicate with the interlocutor even when removing a few meters.
However, magnetic earplugs have a number of significant drawbacks that make you think about the appropriateness of their use in general:
- risk of infection or fungus in the ear canal;
- risk of injury to the eardrum.
As a result, a well-written exam can cost months of treatment in ENT clinics.
Recommendations
Magnetic headphones can only be considered safe if the safety and operating rules are strictly followed. Otolaryngologists strongly discourage the use of a magnetic earpiece, whose user reviews indicate frequent cases of headaches and other hearing problems.