TO GO WITH AFP STORY “Thailand-south-unrest-rights-Britain,FOCUS’ by Aidan Jones This picture taken on March 2, 2010 shows a Thai soldier using a GT200 detector as he patrols the streets of Yala, in Thailand’s restive south. Human rights activists say more than 400 people have been locked up — some for up to two years — on the basis of spurious evidence gleaned by the device, which is at the centre of a British fraud probe and that experts say is useless. AFP PHOTO / AFP PHOTO / AFP