A system for and method of per access-point streaming media customization and privacy protected feedback in a wireless network. Three such embodiments are described. The magnetic field is used to move the guiding element in order to position the electrode substantially adjacent to the target location. Audio or visual signal indicators associated with the controller alert the user to the requirement to set the control limits before the operator will effect movement of the barrier. A drive member engages the moving blade of the hair clipper when the attachment is secured to the hair clipper, and the drive member in turn drives the moving blade of the hair trimmer attachment to cut hair. The network controller includes modules for generating andor processing messages transmitted over the network interface.