Pretty much same device as prototype visible on video in front of Malcolm Smith, except invented ~10 years prior https://thisisit.edu.pl/lucjan-lagiewka-geniusz-czy-oszust

demonstration https://www.youtube.com/watch?v=9Ow-cgHAfNI

There was one problem, inventor Lucjan Łągiewka tried to patent it in Poland. Polish Patent office decided its a scam because nothing can work this well.