| Clue | Source | Date |
|---|---|---|
| Propaganda/surveillance device in George Orwell’s Nineteen Eighty-Four | The Times Specialist Sunday | 31 Oct 2021 |
| Rebellion detector, in "1984" | USA Today | 15 Feb 2017 |
| Technology used to both transmit propaganda and monitor citizens in a 1949 novel by 58-Across |