We have our own protection technologies which can protect exe's. Better than that, we have technologies to protect content like audio, video, pdf, swf files and more. We have existing customers using our technologies to protect their elearning content on pen drives. Our technologies allow locking of the exe or the content to a USB pen drive or to a configurable number of PCs. Options like expiry date can be configured. Our content protection technologies defend content from ripping, screen recording, file sharing, torrenting etc. Let us know of your interest to discuss pricing.