I have no idea if they scan, but as far as I know HI is not a blacklisted product on their site. If it was I would not use it. The agressive ATC chase to the river multi player pots always make Cake tables interesting and it is fairly easy to pick out the maniacs from the solid guys without too much detailed observation (it just requires a period of loose 'mix up' play combined with good note taking) and HI observation can assist the process.