I experienced that same issue with Toys R Us, as a regular shopper. I had to show my ID with each return, including the receipt, and then I couldn't make any more returns until X amount of time. The amount of time might have been 90 days, but I am not sure. That was never an issue with Target or WalMart, so I opted to make my purchases at the competitors. Less annoying harassment, the happier the customer!