The article states the following about the software:

>"It delivers a message to the cockpit with crucial weight and balance data, including how many people are on board, the jet’s empty and gross weight and the position of its center of gravity.

>In a cockpit check before takeoff, this data is entered into the flight computer to determine how much thrust the engines will provide and at what speed the jet will be ready to lift off."

Given that overhead bins are regularly maxed out with carry-on luggage now since airlines began charging for checked bags, how are they able to accurately account for the weight and balance? Airlines seem to almost never weigh customers carry-on at check in.