Is there a device that blocks all wireless signals?

United States
January 10, 2009 1:02am CST
I heard that they are devices that either makes it where machines can't use a wireless feature or just jams it. I wonder if such a device exist.
3 people like this
3 responses
ronaldinu
@ronaldinu (12422)
• Malta
16 Jan 09
I have not heard about this devices but I would not be impressed if such activity does exsit. what would you need this device for? What would be its use for?
Andrew
@AndrewFreyne (6281)
• United Kingdom
10 Jan 09
If you are on wireless at home then you will find that those cordless phones for the home will affect your wireless Internet. Let's take Bluetooth for example. This runs on 2.4Ghz and this is the same frequency that the majority of cordless phones use, same frequency equals trouble! Andrew
mtsandeep
@mtsandeep (1586)
• India
10 Jan 09
yes, there are mobile signal jammers. I have seen those in some theatres. We won't get any calls and no network will be available if activated. After the movie stops, they turn if off.