A series of tests in form of durable plastic Testing Cards, that you can carry around in your pocket , ready to present at a moment's notice.

They are entertaining, but should be taken seriously. They can involve as many participants as you wish and they involve no trickery, which means they never fail. They can be used in any performance venue:
Stage, Parlour, Close-Up, Table Hopping, - you name it!

With these cards you are not only entertaining, but you also position yourself as an expert. Most importantly, you can determine cooperative and open-minded participants for follow-up mentalism effects.