POLICE have backed moves to encourage electronically-controlled doors in goldsmiths' shops, despite claims from witnesses to last week's Causeway Bay raid that robbers beat staff after being stalled by the devices. Police crime prevention officer, Detective Chief Inspector Bob White, said such devices were not intended to stop robbers leaving. ''That's the last thing we want - we are not expecting anyone to do our job for us,'' he said. ''The job of such doors is to stop robbers getting in, in the first place. ''If they do breach security measures, our advice is to make sure they can get out. ''We are still behind such doors as a very minimum.'' His comments were echoed by Mr Leung Sik-wah, the director of the Hongkong Jewellers and Goldsmiths' Association, who urged shop staff to ''place human life above valuables at all times''. ''The use of such security doors, if used correctly, far outweighs the risk to customers and staff,'' he said. Last Tuesday, five staff members of the Chow Tai Fook goldsmith shop in Causeway Bay Plaza were pistol-whipped and beaten with a hammer while 20 customers were held at gunpoint by robbers. It appears staff were too frightened initially to use remote control equipment to open a newly-installed 1,000-kilogram door. The robbers were frustrated by new showcases which only allowed them to get one hand in at a time. They later escaped with $6 million in gold and jewellery. Police recently received Fight Crime Committee backing for a series of minimum standards for jewellers and goldsmiths. Inspector White said he was unable to comment on individual cases. But he said any systems must be accompanied by staff training. The doors were designed so staff members, preferably using cameras, could open the doors only when they were satisfied a person was a genuine customer. He said showcases which restricted access were also valuable as a deterrent. All equipment should be backed by silent alarms, instead of in-store bells which would further alarm robbers. ''These situations are as stressful for the bad guys as they are for staff and customers, so staff training is very important if they are to make these things as smooth as possible,'' Inspector White said.