Creates NSString representation of the serial number for an OSX computer

gistfile1.txt

#import <IOKit/IOKitLib.h>

//
// Creates NSString representation of machine serial number
//

NSString *serial = nil;
io_service_t platform = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IOPlatformExpertDevice"));
if (platform) {
    CFTypeRef serialNumberAsCFString =
    IORegistryEntryCreateCFProperty(platform, CFSTR(kIOPlatformSerialNumberKey), kCFAllocatorDefault, 0);
    if (serialNumberAsCFString) {
        serial = CFBridgingRelease(serialNumberAsCFString);
    }
    
    IOObjectRelease(platform);
}