Part three of my Star Trek inspired gadget blogs isn’t really a “for consumer use” gadget. But could potentially be developed into one someday (think TASER but less likely to cause a heart attack).
The US Air Force has recently developed a non lethal weapon that causes temporary blindness. They are calling it PHaSER (an acronym for Personal Halting and Stimulation Response).
It still takes two arms and a considerable amount of muscle to wield one of these things, but I like that it is non-lethal. Soon we’ll have troops that can set their weapons to “stun”, and that is pretty cool.