I have been thinking...counterfeiters will always find a way regardless of whether you provide a receipt or not. There was once an instance where I sent a package off with the original receipt (I was in a hurry) and then it was misplaced by the Post Office. The receipt was needed in that case, so that is why you should have copies. There is something else about those receipts. I noticed that when I have purchased from Macys, Bloomies and I think Saks, I have the ordinary store receipt, but they are always written on, with initials of the SA and some other things. At least, someone would be able to tell if I was the original owner and I think that is why some people will provide a receipt, but again, that is only part of an equation. That's why you really should be knowlegable about what you are buying.