How to Replace the UDID

http://oleb.net/blog/2011/09/how-to-replace-the-udid/

@interface NSString (UUID)

+ (NSString *)uuid;

@end


@implementation NSString (UUID)

+ (NSString *)uuid
{
    NSString *uuidString = nil;
    CFUUIDRef uuid = CFUUIDCreate(NULL);
    if (uuid) {
        uuidString = (NSString *)CFUUIDCreateString(NULL, uuid);
        CFRelease(uuid);
    }
    return [uuidString autorelease];
}

@end