In the film Surrogates, there's a device that, when discharged on 'avatars', kills the real person operating the avatar. I wonder if cyber warfare of the future

In the film Surrogates, there's a device that, when discharged on 'avatars', kills the real person operating the avatar. I wonder if cyber warfare of the future entails this kind of thing. I would assume that being physically connected to a(n implanted) device would allow for this but, then again, non-implanted technology has been known to cause photosensitive epilepsy (like the Pokeman seizures).