Cheating in exams is always a headache for teachers and school authorities.

For the first time in Beijing, a high-tech device will be put into use in examinations to prevent students from cheating, reported China Radio International Wednesday.

The device is a cell phone detector which can distinguish any cell phone use within 30 meters' distance.

It will be first used in college entrance exam for adults, which is specifically designed for adults who choose to study part-time to get a diploma. And cheating in this kind of exams is reported as especially rampant.

(CRI.com October 13, 2004)