UDID Replacement in IOS7

Question

Is there is a alternative for UDID. My app will not be going to App Store as i'm using enterprise distribution. So is there any replacement. I tied advertising identifier, open udid, UIID and secure UDID. But if the phone is reset then i will get a new UDID. Any help would be appreciated.

Answer 1

For above 6.0 iOS you can use identifierForVendor Or CFUUIDRef.

-(NSString*)uniqID
{
    NSString* uniqueIdentifier = nil;
    if( [UIDevice instancesRespondToSelector:@selector(identifierForVendor)] ) {
        // iOS 6+
        uniqueIdentifier = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
    } else {
        // before iOS 6, so just generate an identifier and store it
        uniqueIdentifier = [[NSUserDefaults standardUserDefaults] objectForKey:@"identifierForVendor"];
        if( !uniqueIdentifier ) {
            CFUUIDRef uuid = CFUUIDCreate(NULL);
            uniqueIdentifier = ( NSString*)CFUUIDCreateString(NULL, uuid);
            CFRelease(uuid);
            [[NSUserDefaults standardUserDefaults] setObject:uniqueIdentifier forKey:@"identifierForVendor"];
        }
    }
return uniqueIdentifier;
}//

UPDATE

As Leon Lucardie comment he is right

identifierForVendor will change after app uninstall/reinstall. See here The value in this property remains the same while the app (or another app from the same vendor) is installed on the iOS device. The value changes when the user deletes all of that vendor’s apps from the device and subsequently reinstalls one or more of them.