As the old and wise saying goes, even walls have ears. We know that this saying is particularly true if, within those walls, conversations take place which are highly confidential, or at least, the participants would like them to remain as confidential as possible.
We also know, though, that especially if the stakes are high and there are high amounts of money involved, there is always a chance, as narrow as it may be, that prying ears could be listening to our words.
To provide protection against this kind of events, a group of scientists from MIT (Massachusetts Institute of Technology) is working on a system that would mask conversations by producing sounds through a network of small loudspeakers placed in the area to protect.
The so-called Distributed Acoustic Conversation Shielding System is made up of a series of portable transceivers equipped with an infrared sensor, a microphone and a small loudspeaker; each of the participants is equipped with one of these personal sensors, recognized by the main unit, towards which they send their position when they are moving from room to room.
As soon as the IR sensor detects the presence of someone not equipped with a similar device, the loudspeakers on the individual transceiver would send out a sound on the same frequency of the one that must be masked (like human voice) making eavesdroppers’ life impossible.
Currently this system is still in its early development stages, it will take a few years before we can see it working. To obtain more information on bug sweeping and anti-eavesdropping systems available on the market, you can visit the Endoacustica site.