If any of those candidates win they'd then have to find a way to get a private key code out to each and every one of their constituents. That key along with a unique identifier, such as social security number would be needed to log into the PlaceAVote system, which makes security one of its biggest priorities. Of course, no system is 100 percent secure and PlaceAVote would certainly face its fair share of challenges from hackers and those looking to commit voter fraud it it enjoys even a modicum of success. The entire premise requires voters have regular access to a computer for this attempt to shoehorn direct democracy into a representative system to work, which will definitely be problematic is poorer districts around the country. And while well intentioned there's a pretty good case against direct democracy in general; just because something is popular doesn't mean it's good (see Modern Family). In many ways having an elected representative is saving us from ourselves.