The Roomba is generally regarded as a cute little robot friend that no one but dogs would consider to be a potential menace. But for the last couple of years, the robovacs have been quietly mapping homes to maximize efficiency. Now, the device’s makers plan to sell that data to smart home device manufacturers, turning the friendly robot into a creeping, creepy little spy. While it may seem like the information that a Roomba could gather is minimal, there’s a lot to be gleaned from the maps it’s constantly updating. It knows the floor plan of your home, the basic...