
Would you recognise yourself from your data?
The circular, grey robot vacuum gently bumps against against my feet. It stops, rotates and follows a skirting board along the kitchen, emitting a loud and unbroken drone.Throwing out beams of invisible light, it plots obstacles and walls, the narrowness of corridors and the expanses of open areas that it can then - gratefully - accelerate into. On a phone connected to it, a floor plan of the house is gradually drawn, inch by inch, bump by bump.As it quietly docks itself in its charger, the floor plan it has built leaves the vacuum and ends up on a cloud server in China. If you squint to read the device's Terms and Conditions, you'll learn that this plan might be shared (although not sold) to a variety of the manufacturer's partn...