How can I get the current Macbook's UUID from Objective-C?

Question

Does the SDK provide an API for retrieving the current Macbook's UUID?

Answer 1

So, if you don't care about the new AppStore rules etc... here you go:

- (NSString *)getSystemUUID {
    io_service_t platformExpert = IOServiceGetMatchingService(kIOMasterPortDefault,IOServiceMatching("IOPlatformExpertDevice"));
    if (!platformExpert)
        return nil;

    CFTypeRef serialNumberAsCFString = IORegistryEntryCreateCFProperty(platformExpert,CFSTR(kIOPlatformUUIDKey),kCFAllocatorDefault, 0);
    if (!serialNumberAsCFString)
        return nil;

    IOObjectRelease(platformExpert);
    return (__bridge NSString *)(serialNumberAsCFString);;
}

Please Note:

• You need to add IOKit.framework to your project in order for this to work.
• This code is ARC compliant;
• This code is safe and it will return a nil NSString if something goes wrong;
• Apple does not guarantee that all future systems will have a software-readable serial number.
• Developers should not make any assumptions about the format of the serial number such as its length or what characters it may contain.