Known as Kimoyo beads, these were a computing module programmed for several purposes. They do tap into the vibranium used in Wakanda. In the comic film, Shuri, a fictional superhero, who is also the brother of T’Challa is seen using the bead behind her ears to remotely pilot a car. The beads basically served as their personal data, holding medical records and so on. For instance, in the film, the CIA Agent would have died if he had been left to Western medicine. But Shuri and her medical Kimoyo beads intervened and kept him alive.