Until a few years ago, the only way to know what was behind your vehicle when backing up was to look back over your shoulder in conjunction with short glimpses into your side mirrors. Thanks to advances in technology, backup cameras are almost standard on new vehicles and provide a sharp view of the area behind you as you’re backing up to leave a parking space or trying to hook something to your trailer hitch. If your vehicle is older and doesn’t have a camera already built in, don’t fret. There are several aftermarket options available today that are easy to use and install. Here are a few features to consider as you shop.