Kimoyo is a type of portable device from Wakanda. There are two types of Kimoyo:
Kimoyo Cards: An extremely powerful portable supercomputer invented by T'Challa. It has the ability to access/hack technological interfaces via Wakandan satellites.
Kimoyo Beads: a mobile device accessed by the beads on a bracelet.
Kimoyo means "for the spirit" in Bantu.
Kimoyo Card first appeared in Black Panther vol. 3 #1, written by Christopher Priest and illustrated by Mark Texeira. Kimoyo Beads first appeared in Black Panther vol. 6 #1, written by Ta-Nehisi Coates and illustrated by Brian Stelfreeze.
Kimoyo Beads appeared in the movie Black Panther (2018).