Box II

"Box II" - acoustic safe for mobile phones and tablets

The new model of 2017. Controlled bands: GSM (2G) – 900/1800 MHz; UMTS (3G) – 900/2100 MHz; LTE (4G) - 800/1800/2500 MHz. A device for monitoring the activity of cell phones and protecting them from eavesdropping. It is designed to accommodate several telephones at the same time. Material: genuine leather.

General information

Every owner of a cell phone is familiar with one of its unpleasant properties: if after the end of the conversation you do not press the "hang up" button, then it continues to broadcast all the acoustic information from the location of the owner of the cell phone.

Also, few people know that in all radiotelephones there is a so-called "police mode". Thanks to it, a communication operator or an attacker equipped with a special set of equipment can forcibly turn on the phone of interest to listen to acoustic information that is within the reach of the microphone of the cell phone. At the same time, the phone itself does not show any signs that it is in one-way communication mode.

It is to combat these negative properties of mobile communication that the device for monitoring the activity of cell phones "Casket"was created. It is designed to protect the owners of cell phones from forgetfulness (the effect of the "wrong handset") and from the tacit remote activation of their mobile devices in order to listen to their conversations.

Appointment

The desktop product " Box " is designed to protect speech information circulating in the places of residence of the owner of a cell phone, in the event of its covert remote activation for the purpose of listening through cellular communication channels. The product has the appearance of a decorative jewelry box.

Protection is provided by automatic acoustic noise of the speech information transmission path when trying to secretly remotely activate the microphone of the cell phone handset. The product performs its functions if the protected phone is placed inside a decorative box.

A distinctive feature of the product is that it is able to provide protection for not one, but several mobile phones. This feature is particularly useful when conducting confidential meetings.

Principle of operation

When a cell phone is working on transmission, the level of the electromagnetic field intensity near it increases significantly. It is this increase that is recorded by the electromagnetic field indicator that is part of the device. After fixing the fact of increasing the field level, the indicator automatically turns on the acoustic noise generator, the speaker of which is located inside the product "Box" in the immediate vicinity of the microphone of the cell phone. The level of acoustic noise at the input of the handset microphone is such that it is guaranteed to provide noise to the microphone of the cell phone. The same acoustic noise serves as a signal to the owner of the cell phone that his phone is active.

Technical specifications