The PDT-System is a complete back-end handler for paypal. Works with paypal's standard and business accounts. (Not for Free accounts) Simply create a buynow button and send the paypal's auto return to this system and you have complete control of the download(s). Supports multiple buynow buttons to downloads. Unique system design prevents sharing of download links and limits buyer to 3 attempts to download. Details of security and how the system works available. Live Demo available.