Sounds like a bunch or crap to me. Let's say it does work though, what else does a person risk losing when they zap your brain? I would rather not take this sort of risk without having more information as it could have devastating effects that weren't desired.
That's what I think. In fact, there have been “anti-compulsive” drugs for many years, but they have side effects, as this treatment will surely have.
This is the worse way i can think of treating gambling addiction.
I preferably take addiction else where to be controlled, at least a therapist also works in the mind controlled by the brain.
I believe that depending on the degree of addiction and the consequences it may have had, this therapy can be evaluated, just like drugs, always taking into account potential benefits and potential risks.