Does the Nike+iPod kit reveal private information about a user?
Yes. When you walk or run the Nike+iPod sensor in your shoe will transmit messages using a wireless radio. These messages contain a unique identifier that can be detected from 60 feet away. This information is potentially private because it can reveal where you are, even when you’d prefer for a bad person to not know your location. • Q: Why is it a problem if my Nike+iPod kit sensor transmits a unique identifier when I walk or run? A: The unique identifier can reveal your presence to nearby receivers. Since the unique identifier doesn’t change over time, someone could use the sensor’s broadcast messages to track which locations you visit, and when you visit them. A bad person could use this information to compromise your personal privacy and safety. We describe specific example scenarios, like stalking, in our paper. • Q: Would it be hard to track someone? A: No. It is easy to track someone who has a active Nike+iPod kit sensor in their shoe. We have built several mechanisms for detect
