In a treatment room at a suburban Shanghai drug rehabilitation centre, “Victor Wu”, a recovering addict, sits in front of a computer screen, viewing assorted scenes through a virtual reality headset.
Wu (not his real name) takes in a lifelike image of a young man and a woman sitting on a sofa drinking a clear liquid through a straw from a small bottle. As he does so, clips attached to three of the fingers on his left hand pick up his physical reactions.
The data reveals to his observers – including police officers who can see on the computer screen what Wu sees – the degree to which this stimulus excites him.
As the woman in this VR-enhanced scene holds her straw out to Wu, enticing him to drink with her and the man, Wu remains captivated for at least 10 seconds – a detail the observers note with interest.
Although he can choose the scenes to view and their duration by using the switch he holds in his right hand, “Wu’s attention is stuck on this scene for a while before [he moves on] to look at other no-drug scenes”, an officer told the South China Morning Post.
“It means he is still a bit interested in having drugs.”
It is all part of a revolutionary effort to use VR technology to reveal the extent of drug users’ addiction – and the type of treatment they need – to help them to turn their lives around.
Clad in the centre’s official inmate uniform of green sleeveless T-shirt, shorts and sandals, Wu and his fellow addicts are part of a trial of VR technology that was expanded this summer to all five of Shanghai’s rehab facilities, from just two in October.
Although the Shanghai centres were not the first in China to begin using VR – some rehab institutes in the eastern province of Zhejiang had employed it last year – their application of the technology is nevertheless distinctive in its application of eyeball movement tracking science.
Being able to read how an inmate’s eyeballs move over certain images gives staff a clearer idea of whether the addict’s gaze is fixed squarely on the repulsive “educational” images of drug addicts he or she must watch.
Tracking eyeball movement also gives staff extra information they can use to gauge the accuracy of the self-evaluations that inmates are required to fill out; many have been known to lie about the degree of their drug dependency in an attempt to speed up their release from the programme.
“In the rehab centre we see those awful pictures of drug addicts through VR helmet several times a month, as part of our education here,” Wu told the Post. “I really abhor drugs now.”
While it is not known how many addicts in China ultimately are to be exposed to the VR programme, the number is expected to be considerable. The five centres in Shanghai and one at Qingdong alone treat 1,800 male addicts.
Xu Ding, a drug rehab veteran from Shanghai Drug Rehabilitation Management Bureau who spearheads the VR project, said the technology’s use has helped alleviate “a major frustration” encountered when trying to treat drug addicts by showing them revolting images of other addicts.
“In the past, to depress the addicts’ desire for drugs, we let them watch TV or presented them horrible pictures of people whose health was seriously affected after long-term consumption of drugs,” Xu said. “But both TV or pictures on papers don’t look real enough.
“What’s more, we can’t tell if these people are really focusing on our education,” Xu said. “They would look at other places, or just close their eyes.”
In 2015, when the VR industry was beginning to get a lot of attention in China, Xu and his colleagues moved to incorporate it in treating addicts. “VR is a kind of embedded viewing experience and is so real,” Xu said.
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