Technofreak:

 

mdooher:

 

AFAIK the only surefire way is to tell your access points to disconnect devices under a certain signal threshold. Mine work well set to disconnect anything below -90dBm

 

IF you don't have that sort of control you may be out of luck

 

 

I've downloaded an app call SWIFI which allows you to set signal threshold levels. So far it seems to work.

 

great idea, should have the same effect, obviously only for the device you load it on...but since that was the only one causing you grief