BluetoothLogView is a new utility that monitors the activity of Bluetooth devices in your area, and displays a log of Bluetooth devices on the main window. Every time that a new Bluetooth device arrives to your area and when the device leaves your area, a new log line is added with the following information: Device Name, Device Address, Event Time, Event Type ('Device Arrival' or 'Device Left'), Device Type, and the company that created the device. BluetoothLogView also allows you to specify a description for every Bluetooth device (according to its MAC address) that will appear under the 'Description' column.
BluetoothLogView requires a bluetooth dongle and works with the standard Bluetooth stack of Windows XP/SP2, Windows Vista, and Windows 7.
You can download this new utility from this Web page.