Magic Tricks

These cards are really clever. Nothing written down, nothing said - exactly as advertised.
Strange, that some other reviewers did not understand the routine: For the spectators the cards are there to focus their minds onto each of the digits while you apparently look into their eyes. So it does not seem fishy for them. The cards are openly placed face down and you don't touch them at all. So, nowhere near card magic.
So it all makes sense. Very nice idea that works WITHOUT anyone writing down their code or typing it into a smart phone.
I love it!