The barcode readers really save the day.me, too. but it is so much easier today.
First off we have iPhones. and Cronometer is on the computer but also an app. And you can log each food as you are chewing it. Or you can just do it all at once while sitting at your desk
Second, the chronometer app has a barcode scanner.
It also hooks up with other apps. for instance it can track calories burned from Apple Health or various fitness trackers.