Here is a neat backpack designed to keep bike riders visible at night. Aster has integrated bike lights, turn signals, and brake indication. It has strap lights and a 16 LED rear light to keep you visible from a distance of 250 meters.
Aster has an inbuilt accelerometer in the handlebar unit. The front lights let you get the attention of drivers in front of you. The backpack will be compatible with iOS and Android devices. The battery will last up to 15 hours. More information is available here.