Rosemary Kizlet's tablet

Kizlet's tablet was a tablet that Kizlet owned, to control people to do different things. 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)

Kizlet's tablet, here showing the ability to control one's conscience, paranoia, obedience and IQ.