A kickstarter project wants to make an app-and-case product that magically transforms your $ 849 unlocked 64GB iPhone 5 into a fricken bike light.
I jest. It’s actually a great idea. The “Monocle” will be (contributions willing) a tough nylon carrying case with a hole in it where the iPhone’s flash goes. You lash this thing to your belt, use the app to set its flash rate (which is calculated by the app based on battery life and estimated ride duration), and off you go. The iPhone will flash red, making you more visible to cars so you don’t die.
Go here to donate.