Hidden Recording Shielder (Recording Jammer) YX-007mini-2

YX-007mini-2 Hidden Recording Jammer is the latest  product of Hidden Recording Shielder developed by Tianjin Yingxun Technology  Co., Ltd. The product is a vehicle-mounted air purifier with good concealment.  It can be used in car or small conference rooms to realize recording shielding  without anyone's awareness. It is also to realize the information security of  voice. The product has remote control switch to open easily.

Functional characteristics

1. Mixed-frequency  interference mode

This product is the first time in the industry to adopt  mixing noise interference mode, which is different from the electromagnetic  interference mode used by traditional recording interference equipment, so as to  avoid electromagnetic radiation to the people near the equipment when the  recording interference equipment works.

2. Sound cannot be  restored

This product is processed by the most seed of true random  number. After processing, the human voice signal and the random interference  signal of the equipment are mixed together, and can not be restored by technical  means.

3. Wide coverage

Compared with the traditional recording  shielding equipment, the interference distance of this product to the mainstream  recording equipment can be more than 2 meters, and the interference angle is  more than 90 degrees.

4. Simple, Easy to Use and Flexible

This  product is stable, reliable, highly product-oriented, simple and easy to  use.

Product Function and Working Principle

1. Basic  Functions

During the working process of the recording shield, random  interference signals will be generated, which can ensure that the original voice  information can not be recovered from the recording signal. The interference  signal interferes with the recording equipment without harming the human body.  When the interference signal is picked up by the recording device, it will cause  only a buzzing noise in the recording signal and can not distinguish the normal  sound signal, so as to achieve the purpose of protecting the voice  information.

2. Working Principle

In the working process of the  recording shielder, the true random number is the most seed, and the  high-security encryption algorithm is used to encrypt the random number. Then  the encrypted random number is processed by mixing the high-frequency and  low-frequency sound sources. The interference signal with unrecoverable, silent  and overlapping effect is generated, which interferes with the sound acquisition  equipment, thus forming the effect of sound shielding.

Product  advantage

1. Basic Product Status

In the field of recording  shielding equipment, there is only one device known to people. The recording  shielding equipment is mainly aimed at obsolete tape recorders and very few  types of recording pens. For the current mainstream recording equipment, mobile  phones, digital recording pens and so on have no effect or very poor  effect.

For this reason, relying on the information security technology  accumulated over the years, our company independently developed the recording  shield products to meet the shielding function of mainstream recording devices  such as mobile phones, digital recording pens and so on, so as to protect the  conversation content security of users.

2. Defects of traditional  technology schemes

The traditional recording shielding technology mainly  uses the random pulse sequence in a wide frequency range to interfere with the  recording equipment. High-power and high-frequency signals produce  electromagnetic interference to the recording equipment, which makes the input  voltage or current of the front end of the acoustic sensor exceed the threshold  of the acoustic sensor, so that it can not work normally and achieve effective  voice blocking. This method has no noise, but its main disadvantage is that it  can only interfere with analog recording equipment better, and the new digital  recording equipment is basically ineffective. At the same time, high-power radio  electromagnetic signal will produce electromagnetic radiation, which is harmful  to human body when used for a long time.

3. Product Competitive  Advantage

3.1. Supporting the shielding of various mainstream recording  devices.

3.2. In the working range of the shield, the original voice  information can not be heard from the recorded information by recording  equipment.

3.3. Within the scope of the shield, the original voice  information can not be restored from the recorded information by recording  equipment.

3.4. The recording shield does not emit audible sound during  the working process.

System constraints and constraints

Specific  descriptions that this product does not support in some scenarios will be  described here.

(1) Equipment type constraints

The device supports  the shielding of various mainstream recording devices, including mobile phones,  recording pens, wireless/wired, wireless recording devices, microphones, etc.  However, due to the constant innovation of mobile phone models, different  brands, different periods and different levels of mobile phone voice processing  parts are different, so the recording shielding effect of a few types of mobile  phones is relatively poor.

(2) Coverage constraints

Limited by the  technical principles adopted, the effective shielding distance of the products  is generally 100-150 mm, the effective shielding angle is about 90, and there  will be some differences for different recording devices.