PDF document, by Anne Franssens, 2010. This thesis describes a research on the impact of multiple searching Bluetooth
devices on the Bluetooth discovery protocol. In order for two devices to communicate using Bluetooth, they first need to set up a connection. A device can start a scan (inquiry scan) to discover available devices in the area. On a low level a device can be discovered without that device physically notifying its user. This principle is exploited to trace people as they move.