KDDI's latest. The Japanese cellphone giant has unveiled a new system, built around accelerometers, that can detect the difference between a cleaner scrubbing or sweeping a floor and merely walking along it. Based on new analytical software, stored remotely, this should provide not only accurate positional information about workers, but also a detailed breakdown of their activities. The benefits touted include "central monitoring, "salesforce optimisation," and improvements in employee efficiency. We're guessing privacy concerns were filed away in a collateral damage folder somewhere.