First of all, i know of 1 other company that makes these, but i'm currently working on this (and of course my other idea i mentioned awhile back about home control) I've come up with a few concepts. And all of them can be used, but i want to know if you would buy something like this if it was priced between $50-$75. 1) A dock like thing that connects to the bottom of the iPhone that covers the sides and back of the iPhone. 2) A case like any other case, but it has a battery either on the bottom, or on the back of the iPhone. 3) A case that has a flap that can cover the front of the iPhone, and is lifted up and goes around the back of the iPhone. I could possibly make this one solar powered. I'll get pics up as soon as i can, but it will be able to fit in your pocket comfortable, protect the iPhone at the same time, and of course have it has backup power.