Bluetrace is a company that uses Bluetooth and Wi-Fi signals from devices to gather data on traffic patterns and crowds. They can track origin-destination patterns, travel times, traffic jams and more. They also provide marketing services by sending messages to devices in certain locations. Bluetrace has over 6,400 units installed worldwide gathering data in over 70 countries. They see many potential applications in partnering with transportation authorities and other organizations to apply their data and insights.