How many times have you heard a GM tell a player they couldn’t have such’n’such a weapon because it wasn’t realistic? I suspect a taser sword might fall into that category; even for some near future sci-fi games. After all, how would you persuade the taser to release its energy down the sword evenly and effectively?
Turns out the trick is to use two short swords. The construction in this video looks horribly and delightfully DIY. Add one more weapon to the arsenal of characters around the world and perhaps a few players as well.