I preach about using these cards all the time. Some books understand what these cards are....they can tell by the first 4 numbers....and some don't. When you buy one, you get a receipt from the retailer. I'd hang onto that receipt just in case they ask you to document the card. I've been using these cards for years, and I would recommend the netspend.com if you want a permanent card of allaccessgift.com for the disposable card.