The most powerful weapon the North Koreans have is the smart phone — in the hands of South Korean conscripts:
In many cases, smart phones are not allowed on military bases. All this because smart phones distract soldiers from their work, especially boring chores like guard duty. This was discovered, with increasing frequency over the last few years as NCOs and officers out, especially at night, checking up on the guards, found the troops engrossed in some smart phone game, or texting or reading an e-book. Despite a growing number of soldiers being punished for having, and misusing, smart phones on duty, troops continue to risk using the devices.