Ebooks - extra security for downloads?
 

We're considering selling ebooks via our site.

Ideally, I'd like the user to be required to login in order to download a product (as an extra deterrent to sharing the link around). I'd also like download links to all previously ordered books to be available to the user permanently via their order history.

Has anyone made anything already that does this? I've come across Altered Cart's Download Expander, but although that does feature enhanced security and more control over e.g. link expiry times, it wasn't quite what I was looking for.

Thanks,

Rachael