Typically it will take several sensors deployed at the perimeter of the building to adequately protect all wireless devices with WEP Cloaking. This also implies that, even in small stores, it may take more than one sensor for adequate WEP Cloaking protection; the higher the density of sensors you deploy, the better your legacy encryption devices will be protected. Any deployment should start with a site survey or RF simulation of the WLAN environment, followed by a mapping of sensor coverage to access point coverage of unique channels.