Professor Madison's device
In Reality Z-25 31-H, a device taking the form of a helmet with a large trunk or proboscis was created by Professor Madison for Captain Evening in response to Doctor Brain and his daughter beginning to use interdimensional portals in their schemes against the Captain. The device could detect the formation of interdimensional portals, however brief, and trace their location. Among other thing, it picked up the Legion of Light's summoning of the demon Red Vicious using their Magic Sword. (COMIC: Enter–the Legion of Light!)
It also more generally responded to magical activity. It once detected Jesse Brain's mundane use of spellcasting to help her father clean his kitchen, although no one was watching the device at the time. (PROSE: In Dr. Brain's Kitchen)
