Dog Fence DIY reviews the Perimeter Technologies Wifi Fence, a new wireless dog fence system. They are apparently not at all impressed by the results. Their complaints about the wifi fence are that it has a very inconsistent boundary and that the system does not work well with obstacles. So apparently the Wifi has all the same problems the old PetSafe Wireless has. Oh well, I guess the more things change, the more they stay the same. Check out the video review below.