In this primer on how to replace a car key fob, Consumer Reports says getting another high-tech key fob can be a pricey proposition.

With push-button start systems, you can start your car effortlessly. As long as the key fob is inside the vehicle, a simple press of the button is all it takes.

Ford could replace your key fob with radio-button passcodes Key fobs aren't the most secure things, but Ford's latest patent may have a novel solution to that.