The android application "What you eat" has an integrated barcode scanner , which can scan the bar code and get a number that is encoded in it . But if your device has installed one of the following barcode scanners :

Google Goggles (Free) Barcode Scanner (Free) Barcode Scanner Simple (Paid) Barcode Scanner (Paid)

It will prefer to use them because of the fact that they specialize in this. If desired by a user the possibility of adding other will be explored.

Except through the camera of your device , you can use your voice to dictate the numbers using the integration with Google Voice . In - what you eat - you can dictate the ingredients when adding new product. Except some of the terms of the ingredients used in the foods , is doing quite well.