Simple plugin that enables you to add unlimited use, or single-use download codes for your site.
Download Code Redeemer is a plugin that enables you to have downloads hidden away behind simple authorization. User gets a code, enters it on your website, and the plugin starts a download.
You can create two kinds of codes - single use codes and unlimited use codes.
Download Codes are output as a downloadable CSV file, which makes it very easy to send to printshops for adding to cards or the like.
The redemption form is out via a shortcode.