Interesting. Apple seems to track the accelerometer data in the background. (Why health app can tell you about steps and stairs...) But beyond that data leak

Interesting. Apple seems to track the accelerometer data in the background. (Why health app can tell you about steps and stairs...) But beyond that data leakage is an interesting problem. 10 years ago I started working at a company that did home power monitoring. We used my bosses house to test. When he went on vacation you could clearly see it in the power use. The daily rhythms of a home (laundry on wed, out late on certain nights ), when they cooked. It all had become very apparent under the guise of just monitoring how much power you were using. We switched to selling to businesses shortly after which was much better. Though those that wanted to generate as much as they used and monitored it were interesting and provided good feedback on the product. Our Big Boss's said his wife got a little aggravated with him, when he noted she had come in early (you can keep your toys just don't talk to me about it), and he noted his house cleaners operated by turning on all the lights in his house, and turning them off only when finished cleaning a room... Its a weird world, and the data you put out there might say more than you think.