Like if somebody asks to shuffle the cards and it has no impact on the routine and is just dead time, do you let them do it or simply say no. I was reading some stuff on the cafe and one guy said he had a repeat customer who constantly wanted to examine everything and even went as far as putting her hands in his pockets and constantly wanting to see his hands. I'd think in my opinion the min somebody wants I don't know wants to reach into my pockets is when I'd just smack their hand away and out right tell them stop it. The other thing is I remember watching Michael Vincent perform on one of his DVD sets and he did some coin magic, yet NOBODY asked to see the cards, the coins or any of the other items. He simply said "These are real Morgan dollars." and then went on to perform. So the thought hit me, if you have coins and don't want people examining them for whatever reason, couldn't you just say "These are antique coins passed down from my Grandfather." and then perform without having to show them to everybody.