The Center for the Built Environment has fabulous plans for the office of the future in which environmental conditions are tailored to the desires of every individual. Maybe soon we'll all be wearing temperature, humidity, and environmental comfort sensors sewn into our clothes, continuously talking to our workspaces which will deliver conditions tailored to our needs. No more fighting with your office mates over the thermostat. This could be generalized to a whole family of interfaces for the disabled. Yes, personal privacy is getting harder and harder to come by.
Every technology has a dark side - deal with it.
As an engineer, or a scientist, or a hair stylist, everyone needs to evaluate what they do in terms of its positive and negative effect. If I thought that the negatives of working on this project were larger than or even comparable to the positives, I wouldn't be working on it. As it turns out, I think that the potential benefits of this technology far far outweigh the risks to personal privacy. A lot of people seem to be worried about environmental impact. Even in my wildest imagination I don't think that we'll ever produce enough Smart Dust to bother anyone.