There are two boxes, each has different personality. One of them is a touch box. If you would like to touch the person, then you release him from “darkness”. Another one is a distance box, when it closes to a person in the certain range distance (0.2m-1m), it would open its goggle, and the person inside can see the outside world. When it too closes to the person, it will triger its self defence systerm, and the google will be close.