iPhone App The ZBar Barcode Reader iPhone® App is a simple demonstration of the ZBar library on the iPhone 3GS and iPhone 4 platforms. Using the app you can: Scan EAN/UPC codes and link to web sites that perform product searches. Links to Google, Amazon and the Internet UPC Database are predefined. Scan QR codes containing URLs and link directly to the web site. Scan QR codes containing an E-mail