Rosemary Kizlet's tablet
From Tardis Wiki, the free Doctor Who reference
Rosemary Kizlet owned a tablet which she used to control people. It could change conscience, paranoia, obedience, IQ, happiness, attraction, love and religion. It also brought all the workers (including Kizlet herself) back to their "factory settings", releasing them from the control of the Great Intelligence. (TV: The Bells of Saint John)
