Alternative to iPhone device ID (UDID)

You can get iPhone device ID using this "udid" method and you can download OpenUDID class from https://github.com/ylechelle/OpenUDID 

+ (NSString *)udid

{

    NSUserDefaults *standardUserDefault = [NSUserDefaults standardUserDefaults];

   

    static NSString *uuid = nil;

   

    // try to get the NSUserDefault identifier if exist

    if (uuid == nil) {

       

        uuid = [standardUserDefault objectForKey:@"UniversalUniqueIdentifier"];

    }

   

    // if there is not NSUserDefault identifier generate one and store it

    if (uuid == nil) {

       

        uuid = [self genarateUDID];

        [standardUserDefault setObject:uuid forKey:@"UniversalUniqueIdentifier"];

        [standardUserDefault synchronize];

    }

   

    return uuid;

}

+ (NSString *)genarateUDID

{

    NSString *uniqiPhoneID;

   

    if (!NSClassFromString(@"ASIdentifierManager")) {

        // This is will run before iOS6 and you can use openUDID, per example...

        uniqiPhoneID = [OpenUDID value];

    }

    if (uniqiPhoneID == nil || [uniqiPhoneID isEqual:[NSNull null]])

    {

       

        CFUUIDRef uuid = CFUUIDCreate(NULL);

        CFStringRef udidString = CFUUIDCreateString(NULL, uuid);

        CFRelease(uuid);

       

        uniqiPhoneID = (__bridge NSString *)(udidString);

       

    }

   

    return uniqiPhoneID;

}