Cerulium bracelet

Cerulium bracelets were bracelets used as a method of mind control by the Department. Using the material cerulium, the bracelets could cause those who wore them to be less rebellious. The girls also seemed to be very flirtatious when under the control of these bracelets, and the men who were entranced by them always responded very acceptingly, possibly because of an aura of sorts the cerulium created. Also, these bracelets controlling them made these girls seem more attractive, as the bracelets probably made them behave in a way that made them try to be more attractive in appearance.

In 2050, Drake started using the bracelets at the Magdalene Academy as part of his plan to take full control of the people of London. However, K9 destroyed the bracelets after his friends learned of the danger they posed. (K9TV: Sirens of Ceres)