South Korea will give school children GPS-embedded beepers as part of a trial to stem a wave of brutal sex crimes against minors.The beepers are designed to warn police of dangers and activate surveillance cameras. Each child will be able to use their matchbox-sized beeper fitted with GPS technology, to activate any nearby cameras and alert parents and police via mobile phone. About 1,200 elementary school children in Anyang City, south of Seoul, will receive the beepers in a test run from October. The ministry of public administration and security said authorities will then consider adopting the system nationwide. The government has strengthened monitoring of elementary schools after several crimes against children.