Be sure to understand any additional features you need to add to your packaging to ensure you can actually supply to stores. A barcode is an essential element although not a legal requirement. You can typically get a barcode from one of thousands of suppliers on the internet or ask your manufacturer for information regarding this.
A barcode is added to a product to enable the stores to scan them to automatically retrieve the price of the item. Without a barcode you can imagine this would be very difficult.
The technical definition for a barcode is a machine readable form of information on a scannable, visual surface. Also known as UPC codes.
Each number on the barcode has a particular meaning and often these numbers are added, multiplied and divided in some formula which gives them their own individuality. For example if the number barcode starts with a 0 then that is known as a UPC number. If the code starts with a 1 then its called a “random weight item” meaning the price of the item depends on its weight. This would apply to meats, vegetables and fruits. If the code starts with a 3, then its for a pharmaceutical product. There are a large variety of different numbers that can be used with different meanings.