Privacy works by buying large blocks of gift card numbers and issuing them on demand. A vendor can (and some do) reject gift cards. For those that don't, you

Privacy works by buying large blocks of gift card numbers and issuing them on demand. A vendor can (and some do) reject gift cards. For those that don't, you can use any billing name/address you'd like and the cards will verify. Privacy uses the car number + expiration + cvv2 code to validate the card. I've had a single merchant reject a purchase because I used "${merchant_name} Customer" as the billing name. I also us a blackhole mailing address to avoid the seemingly natural inclination of various vendors to send paper mailers that I don't want.