Meet the Shoka Bell: a smart bike bell that combines with your smartphone to keep you visible/heard and help you get to your destination. It comes with 8 different tones for cars and pedestrians. It automatically adjust to ambient, so you get heard every time.
The Shoka Bell has Bluetooth. It finds you safe routes and keeps you out of busy junctions. The front light adapts to your speed and keeps you visible. With motion alert, Shoka detects movement and alerts you wirelessly. Yet another interesting Kickstarter project.