Cards and mentalism don't mingle..

I will make it short.
Most mentalists seem to suggest that the presence of deck of cards in a mind-reading effect/show seem to suggest the idea of trickery in the entire event.
Well,what about thought-of-cards?
What about something super clean and direct?
What if I ask you to merely think of a card and than I blurt out:"The Five of Clubs.." and I'm right?
Is that still a trick?
What if I do a long distance mind reading effect but the only deck is in your hand on the other end of the line?
What if there is a deck of cards but it is sitting untouched on the table during the show?