You can scan a barcode with your iPhone by using a third-party app. Currently, there are no built-in apps that can read barcodes.

How to Use Your Cell Phone to Look Up Barcodes. As phones, planners, cameras and miniature computers, cell phones provide many convenient functions for businesses.

How to Scan a Lot Number Using a Bar Code Scanner. Bar code scanning is an easy way to track your business inventory or even keep tabs on office supplies. Many bar codes contain a lot number.

TECH How to scan a QR code with your iPhone or Android phone (no apps needed) QR codes are those pixelated squares you see in restaurants, advertisements, stores, food packaging, business cards ...

You don't need to buy a scanner to sign, scan and send official documents -- just follow these steps to use the scanner right on your iPhone.