What is the difference between a rear camera and a parking sensor?

A back up (parking) sensor will make a beeping noise inside the vehicle as it gets closer to an object while backing up, giving the driver an idea of how close they are to avoid backing into something.

A back up (rear) camera is a video feed from behind your vehicle that shows the driver a feed on the video console. They allow the driver to have a clearer idea of what is behind them, and how close, making it easier to back in to a parking spot.

Rear cameras have been proven to be far more effective at preventing drivers from getting into an accident and backing into people or objects as they back up, but are typically more expensive as options on cars.