A mother with a six-month old girl receives a voice reminder in her local dialect to take her daughter for her next vaccination. She comes to the local health facility where the health worker takes off a small pendant attached with a black thread from the child’s neck, which has an embedded digital microchip. She places it on the tablet, and all the immunisation information related to the child appears on the screen. The health worker finds that second dose of pentavalent vaccine is due. She administers it to the child.