With the rather amusing title How Jews celebrate christmas, LadyADA announced to the world her latest creation. It is a simple and cheap automatic radio frequency jammer.
For not very much money, this pocket sized device will knock out cellphone calls and GPS within a 10 to 30 metre radius of itself. This has some important conotations, from avoiding parking tickets and police pursuit, to the disabling of wireless video cameras and alarm systems.
Unlike like most systems, you see, this one automatically tunes to jam anything in range within milliseconds. So it doesn’t have to use a high power transmitter broadcasting all the time across a whole range of the radio spectrum, and it can work unattended. Ideal for stopping un-democratic “voting computers” that offer no proof that you pressed a button, let alone that your vote was actually counted any place. Also ideal for jamming wireless video cameras in public places, or, less civic-mindedly, private places.
Note that a wireless burglar alarm would simply sound forever, as this would keep track of the frequency hops it carried out to try to avoid the interference, and wipe it out, triggering a tamper alarm. Of course, with nothing visible, it would be silenced by law after the neighbours complained, leaving the clever criminal free to enter.
A more positive use would be a way to track down bugs in a security sweep. If the PLL locked to anything, it’s a transmitter, and those formerly listening in wouldn’t know to cut and run, or even turn off the transmitter, as it would be effectively jammed until it was located. Covert cameras could then be used to ensure that when the bug was retrieved, those monitoring would be caught in the act.
Like all technology, this has both a light and dark side.
Hello, I was looking around for a while searching for wireless security cameras and I happened upon this site and your post regarding WaveBubble – an automatic wireless jammer, I will definitely this to my wireless security cameras bookmarks!