The link below is a working demo of S3MediaVault's File Protection capabilities. The link below is set to expire in 60 seconds.
You will be able to click on the link below for up to 60 seconds and be able to open the "test.pdf" file that it links to, and download it.
If you waited for 60 seconds, and then tried to click on it, either on the page itself, or copy the link and open it separately in a new browser tab, or email it to yourself and then tried to open it after that time has past, you will get an "Expired" error message.
If you wish to create an Online PDF Viewer where the PDF is really hard to download, then check out our S3 PDF Viewer demo.