Engineering360: "Tech company and US Marine Corps test long-range taser"

If it doesn't have any method of determining remaining distance to target, the deployment of the parachute can occur far too late to provide the intended speed reduction. Since most military weapons are designed to eliminate the "enemy" this isn't a "problem". However, since so many of these migrate into the "civilian" sector the potential for severe injuries or death may become an issue. All-in-all a bad idea.

--JMM