How to configure iOS app to work on specific devices?

I am developing iOS app with ZBar SDK for QR-codes scan. Here ZBar SDK creators tell us that Only the iPhone 3GS and iPhone 4 are supported, as they have a camera with auto-focus. The ZBar library does not support the iPhone 3G and is unlikely to ever support it. So I have added `auto-focus-camera` key to the `Required Device Capabilities` section of my plist. All is great, except one thing - iPad 2 & iPod Touch 4th Gen doesn't have auto focus camera, but still are able to use my ZBar SDK code to scan QR-codes. But my `auto-focus-camera` key doen't allow users with iPad 2 and iPod Touch 4th Gen to download my app from App Store. In other words I need to find a way to make my app installable via App Store on these devices: - iPhone 3GS. - iPhone 4. - iPhone 4S. - iPad 2. - The New iPad. - iPod Touch 4th Gen. And on these devices my app should not be available: - iPhone 2G. - iPhone 3G. - iPad. - iPod Touch 3d Gen and My question is: how to make my app available in App Store for first list devices' user and not available for second list devices' users? Any help will be appreciated! PS: I have seen this question on SO, but it doesn't help me much. PS2: This app has the desired set of available devices. Requirements: Compatible with iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (4th generation), iPad 2 Wi-Fi, iPad 2 Wi-Fi + 3G, iPad (3rd generation) and iPad Wi-Fi + 4G. Does anyone know, how they did it? PS3: At the same time adding both `still-camera` and `auto-focus-camera` gives us this: Requirements: Compatible with iPhone, iPod touch (4th generation), iPad 2 Wi-Fi, iPad 2 Wi-Fi + 3G, iPad (3rd generation) and iPad Wi-Fi + 4G. And that is not a great way as long as we have all iPhones as suitable for our app, instead of 3GS, 4 and 4S. PS4: My app is here and it has such requirements: Requirements: Compatible with iPhone 3GS, iPhone 4, and iPhone 4S.