If you want to buy one instead of getting one of the free ones that's up to you but either way you can simply go to Apple's "App Store" and search for "Barcode reader" and you should find quite a few.
Apple Computer, Inc. http://www.answers.com/topic/apple-computer-inc
Apple started in 1976 as Apple Computer. In 2007, the word Computer was dropped and it was then that Steve Jobs introduced the Iphone.
Apple Computer
The Apple iPhone is a separate computer from any other computer line. It runs its own operating system, which is completely separate from Apple's OSX desktop/laptop operating system.
just use a camera
Apple computer, Apple I-pod, Apple I-phone
Apple Inc
The first Apple iPhone was introduced June 2007 and was simply called iPhone. People now refer to it as the iPhone 2G or original iPhone.
One can download a scanner bar code reader from the iPhone 5 from the Apple app store. There are many applications that can achieve this, some of them are: Scan Life, Scan - QR, Red Laser.
Apple iPhone 5s Gold
mms (In the text message app) or plug it into your computer - in the folder on the apple iphone camera
Steve Jobs was Chairman and CEO of Apple Inc. when the iPad, iPhone and iPod were introduced. He was not the inventor. He had input into and guided the team of developers and designers that created these products. He was one of the founding members of Apple along with Steve Wozniak and Ronald Wayne. During his time with Apple, the company developed: Apple I computer Apple II computer Apple IIe computer Apple IIc computer Apple IIgs computer Apple III computer Apple Macintosh (about 40 models of these) Apple iBook Apple iMac (about 15 models of these) Apple PowerBook Apple PowerMac Apple Writer and a bunch of other hardware.