In iPhone news we have already spoken RedLaser ever, a free application that allows a fast read barcodes and QR Code that are so fashionable lately to then show a list of products you've scanned price and where you can buy cheaper (to use this feature I recommend changing the currency to euros in the setup menu.)
And thanks to the new update now RedLaser we generate our own QR Code to share our information, contacts, URLs or text (up to 230 characters.)
Version 2.9.4 also added support for multitasking iOS 4 and improved the speed at which the codes are scanned.
RedLaser
Developer: Occipital, LLC
Price: Free (download application)