QR Codes can be used in Google's mobile Android operating system using Google Goggles or 3rd party barcode scanners. QR Codes can be used in iOS devices [iPhone/iPod/iPad] via 3rd party barcode scanners. The browser supports URI redirection, which allows QR Codes to send metadata to existing applications on the device. Nokia's Symbian operating system features a barcode scanner which can read QR Codes, while mbarcode is a QR Code reader for the Maemo operating system. In the Apple iOS, a QR Code reader is not natively included, but more than fifty paid and free apps are available with both scanning capabilities and hard-linking to URI. Google Goggles is also available for iOS. With BlackBerry devices, the App World application can natively scan QR Codes and load any recognized Web URLs on the device's Web browser. Windows Phone 7.5 is able to scan QR Codes through the Bing search app. They can also be used on the Nintendo 3DS.
There are a number of websites that provide QR Code decoding. The lack of functioning tools for decoding from image files or webcams within either the MacOS or Linux PC-based operating systems make this standard unpalatable as a data-backup method for storing private data, such as passwords or encryption keys.