They've infiltrated homes in Hong Kong, shops in Vancouver, the streets of Sierra Leone, town squares of Oaxaca, schools in Tel Aviv, bedrooms in Indiana. They're not pets, nor ghosts, nor robots. They're real people, but how can a person living in Berlin walk freely through the living room of someone in Sydney? How can someone in Bangkok have breakfast with your children in Buenos Aires, without you knowing? Especially when these people are completely anonymous, unknown, untraceable.