A cellular telephone is used as a remote control device to control operations on the users nonportable computer which is remote location to the cellular telephone. An exemplary apparatus generally comprises a body having a pin-receiving slot formed therein for receiving a closed end of the pin therein, and a resiliently-biased pin-retaining mechanism within the slot for releasably engaging and retaining the closed end portion within the pin-receiving slot during installation. Hence, the relative distance between the radar and the target is got. X-rays from both stationary X-ray source points are transmitted through the object being scanned and detected using detector elements positioned across the imaging volume and opposite the stationary X-ray source points. A pair of opposed ears on the movable end of the connector engages the walls on the base to hold the slot in engagement with the wire.