Already if the person asking the question, so he curiosity.
I think therefore give information but not too much to accentuate his curiosity and so he came to see SFi.
One could say to you noticed the sticker? You know a system of selling products that offers more than 110,000 products and 160 this Country? It surely say NO. He then gives the card reporting the code and he realizes by himself. He will say that he surprised what he will discover.
Let curiosity departure do the rest.