There are many reasons to stamp your PDF eBooks, but the main one would be to protect your eBook from being shared. The WP PDF Stamper is a unique product. It allows you to dynamically stamp a PDF file with the customer’s details (e.g name, email, address etc.) in the footer. The PDF Stamper can be integrated with a 3rd party payment system or shopping cart (e.g WP eStore). The shopping cart will automatically provide the verified personal information of the customer from the payment gateway to the PDF Stamper which will be used for stamping the footer. This way the true personal details of the customer will be stamped on the PDF eBook as opposed to some fake details.