How does push-button start work on cars?

Push-button start is standard on most modern cars, trucks and SUVs today. How does it work and is it better than ignition keys?
GM Authority

GMC Yukon, Terrain And Others Recalled Over Failing Fuel Pump Control Module

GM models, including the GMC Yukon, Terrain, and Acadia, have been recalled for a potential fuel pump problem that can interrupt fuel flow to the engine.
GM Authority

Chevy Camaro, Equinox, And Others Recalled Over Failing Fuel Pump Control Module

A wide range of GM models, including several Chevy cars, crossovers, and SUVs, are affected in a recall over potential fuel pump control module failure.
IEEE

Smart Truck Load Monitoring and Overload Prevention System with Ignition and Fuel Control

Abstract: The Smart Truck Load Monitoring and Overload Prevention System with Ignition and Fuel Control is a comprehensive solution that tackles important issues facing the trucking sector. Truck ...