SINGAPOREAN ZHENG BEI YI, who is exasperated by the daily jam at the Causeway. He asks if Singapore could shorten the queues by using thermal cameras to check vehicles as it did, to much praise, during the height of the Sars outbreak. 'If thermal technology is advanced enough to separate someone with fever from a crowd, surely the same technology can be used to detect a human hiding in a lorry,' he says. Use mobile X-ray machines as well to exploit technology more effectively, he adds