the shopping cart has something like "temporary download link" for Digital Products, but it says only lowest duration is for "1 day"...and the user has to go through a "buy now" process...i am thinking more of a captcha, or password protected button, that by clicking the user auto-generates a unique 1 time download URL, that hides the true file path of the download storage, and that expires after 1 download (to limit bandwith and robots from downloading like crazy)

any ideas how this could be done simply? i am not a coder or anything, so if possible a simple way?