A Thermoscan Bar is a red bar that scans with thermal imaging. It can be blocked and tricked by putting in heat packs. In The Arctic Incident, Holly Short instructs Chix Verbil to run a thermal scan to look for goblin smugglers. In The Time Paradox, Opal Koboi used this scanner to see if Artemis was alone when escaping in the plane, discovering that he had been hiding Jayjay, or rather Professor Primate, under his shirt.