Chinese education authorities have gone high tech to catch cheaters as millions of high-school students take their "gaokao", the annual university entrance exam seen as key to landing a lucrative white-collar job. Students have used wireless cheating devices disguised as erasers, belts and watches to pass the exam. Some also use tiny earpieces to communicate with accomplices. The innovations have forced authorities to step up their game in response.
 

Chinese education authorities have gone high tech to catch cheaters as millions of high-school students take their "gaokao", the annual university entrance exam seen as key to landing a lucrative white-collar job. Students have used wireless cheating devices disguised as erasers, belts and watches to pass the exam. Some also use tiny earpieces to communicate with accomplices. The innovations have forced authorities to step up their game in response.