human
As the late Al King found out, booby traps, or any such automated system intended to incapacitate a suspect, will be severely frowned upon most anywhere in the United States.  No such purely automatic system I'm aware of is perfect and able to distinguish between a genuine "bad guy" and some fool, mentally challenged or otherwise.

Then again, times (and sentiment) could change.  In a few parts of the world it is today perfectly legal to equip your car with a small-scale flamethrower to incinerate a car thief or to deter an assassination or kidnapping attempt.
gpt
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