Marketing people are never very good at net security so they tend to mess up their copy.

If you're using a decent commercial AP, not one designed for the home, then it will support EAP and will keep the wardrivers at bay. (Actually, if its really good it could direct these to outside the fence -- handy for visiting reps -- but you'd need one that understands VLANs.)

the link given has a couple of typos in it. 
It links to: 
http://ww.merunetworks.com /

instead of:
http://www.merunetworks.com/

...but I thought cellular blockers were only illegal as they by design had to transmit on the same licensed frequency as the cell itself, which is a big no-no.

802.11a/b/g/n is license-free, so presumably as long as the ERP of the jammer is within territorial limits, presumably there's no problem. Besides, they're only jamming data which the owner themselves generated in the first place.

Or they could just install a 2.4GHz wireless camera - they do a surprisingly good job of killing wireless networks :-)

This sort of WiFi jammer could probably be defeated using a better antenna. Choose a location where there is a good angle between the target and the jammer and aim you high gain antenna to the target. If necessary, add a second element and place your antenna array's null onto the jammer. Not trivial, but pretty close. Might need to munch down plenty of Pringles to obtain the necessary hardware.


For £500 you can have my old microwave. Whenever it's running my laptop drops off its wifi connection to the router.

Needless to say I didn't like being in the same room as the old microwave... I'd hide in a different room and wait for the "all clear" ping!

The cat however is not so bright, and now has 2 tails.