I don't do this yet, but my CC house allows me to use software to process the credit cards. All I need is a laptop with a modem and a printer to print receipts and I would be in business. In another facet of my business, I accept credit cards for copy work done as a vendor with the National Archives. They order images either on line or by mail and I make the reproductions and process the credit cards. I several years I have only had one image that was not delivered because CC was declined (I happen to have a second sitting on my desk now and am worried about the eventual outcome). So I don't see this as a big problem. The computer makes it simple and quick, no little box to have around and to lease.