Techniques for positioning access points and terminals in WLANs and other wireless networks are described. In one embodiment, the remote control device is configured to accept a user input signifying a command for a second electronic device, as well as generate the command for the second electronic device, and an indication of the command. As a result, rotation can be transmitted to the lead screw smoothly and reliably to move the optical head frame rapidly and smoothly. Factors such as an air bubble, and the entanglement of the hollow fiber membranes is restricted; thus, a hollow fiber membrane is not damaged. The generated authentication code is compared with the authentication code read from the indicium.