NighU (nigh for near) is the contact app of the future. Your repository of neighbours. Glued as you are to the telephone on your wrist, it will show you who your neighbours are and a little line to identify them, to initiate conversation. It is understood that people on your neighbourhood are there to be spoken to, to help you and to be helped.
The local shop acts as an identifier, although criticised as a form of social control, it has proved very popular because only your trusted local shop holds that information, and only other residents can see your profile.