So far just Android Market and iPhone Appstore!
By the way, are you looking for an app to read these barcodes? Look for your app in your Market, App Store, App Catalog, or Appworld.
Bam! Here's the app you need to read QR codes on your phone. If you're on your computer click in the middle column. If you're on your phone, just tap on the download link and you're good to go.
|Phone / OS||App||Download|
|Windows Mobile 6.5||BeeTagg|