My local newspaper had
the robotic curtain video with the comment:
This crazy invention is totally made for first-floor apartments on busy streets in Manhattan. It's a robotic curtain that detects the movements of people outside and folllows them along the length of the window, blocking their view into the apartment.
Now, I may be missing the obvious. But on a busy street in Manhattan isn't it likely you would have more than *one* person passing by at a time?