There is a way to kill rf signals. It involves destructive interference, where the exact inverse of the rf wave is broadcasted. It could theoreticallty be used as a method to control how far and where that signal goes. This technique is already used quite well in noise reduction technology, but I have no idea how it would be implemented for wifi. Most sound units use a mic to sample the sound around them and than broadcast the inverse signal. If this were done for wifi, you would also interfere with the many other devices that operate on that frequency. Intentionally creating a device that interferes with other legitimate radio devices might get you in trouble with the FCC.
Kevin Arima wrote: >I also recall the placement of the "AP" as well as exact placement of the >adapter IR window being pretty critical in whether or not you get good >connection or not. > > > I think that is the point of it ... Because of the RF nature there really is no real sense of topology (unless you strictly understand and apply it), while cornering off a room in a box would be more understandable in areas which RF should not be leaking to. The title of the article should really be "Antenna to boost IR wireless", but they made the case of 802.11 RF not being well contained ... Speaking of which, is there any type of programmatically method of killing RF signals @ specific points? (im not an RF engineer :-) - Jon -- NYCwireless - http://www.nycwireless.net/ Un/Subscribe: http://lists.nycwireless.net/mailman/listinfo/nycwireless/ Archives: http://lists.nycwireless.net/pipermail/nycwireless/ -- NYCwireless - http://www.nycwireless.net/ Un/Subscribe: http://lists.nycwireless.net/mailman/listinfo/nycwireless/ Archives: http://lists.nycwireless.net/pipermail/nycwireless/
