Review on PortaPow USB Data Blocker (Black) - Secure Against Juice Jacking Safely by Gunaraj Callaham

I only give one star because I have to write a review. I bought this blocker to use in my car to charge my phone without plugging it into my car stereo. It completely disables my port. When I contacted them they talked about amp ratings and draw. You should warn against using it with factory car stereos. It's not even heavy enough to make a good paper weight