GPS2BT Widget
GPS2BT Widget allows You to controll process of sharing GPS signal. In fact, this is the whole program itself.
You may turn off and turn on sharing by clicking on this widget.
If Bluetooth is enabled, clicking on widget will turn the indicator to green - your phone ready and waiting for new incoming connection.
When some device connects to your phone the indicator turns yellow if GPS is enabled or red if disabled.
Next click breaks current connection (if was) and stops receiving new connections.