Abstract: A key control tag is configured for use with the Key-Trak, Inc. key control system, and provides several advantages over the conventional tags of that system. A problem with the Key-Trak, Inc. system, is that electrically conductive objects (keys, paper clips, staples, etc.) can fall into the slots in the drawer of the device, shorting out the electrical contacts within the slots and causing costly damage to the system. The present key control tag includes a laterally extending flange which covers the gap or space between the side of the tag and the edge of the slot, thereby precluding entry of foreign objects into the slot. The present invention also includes a blank embodiment for covering otherwise unused slots. The present tags are also formed of somewhat thicker and stiffer material than the Key-Trak, Inc. tags, reducing bending of the tags when multiple keys or massive objects are attached thereto.