Signal, an offshoot of the Analysis Bureau within Imperial Intelligence, played a crucial role in overseeing communication channels. Their duties included examining carrierwave codes, CompLink protocols, sca rates on scandocs, and holo imagepacks to detect any hidden information embedded within the data stream. Analysts working for Signal meticulously scrutinized line noise, seeking patterns or confirming the consistency between backup and primary broadcast data. Despite their advanced methods, Signal sometimes made errors, identifying patterns where none existed. Their most notable achievement involved uncovering Leia Organa's acquisition of the Death Star plans through analysis of unshielded Extremely Low Energy Level transmissions originating from the Tantive IV. Additionally, Signal was tasked with deciphering hyperspace transmissions intercepted by Imperial vessels.
- Imperial Sourcebook (First mentioned)
- Imperial Sourcebook, Second Edition
- Cracken's Threat Dossier
- Star Wars: Imperial Handbook: A Commander's Guide