Unglue.it <http://unglue.it/> implemented something like that as part of "buy to unglue", using per-loan embedded licenses and watermarking. We've not had a lot of success getting publishers to buy into it. Or libraries. If you have applications, several of the components are open source.

Eric

> On Mar 25, 2015, at 5:15 PM, David Malone <[log in to unmask]> wrote:
> 
> Has anyone figured out how to circulate "one-off"/independent e-books to your library patrons? We have ebooks that are not from major vendors like EBL, etc that we have permission to loan. However, I want to be sure that we have some sort of controls on them so that we are not simply distributing free copies.
> 
> I envision a "system" that would take a non-DRM ebook file (PDF?) and place limits on it for a specific time-frame. This system would also track what is out and what is available.
> 
> I think think of various individual pieces that may work in my context, but not the full system.
> 
> There is great potential here. Any musings or thoughts would be welcome.
> 
> David B. Malone, MLIS, CA
> Associate Professor
> Buswell Memorial Library
> Wheaton College
> 501 College Ave.
> Wheaton IL 60187-5593
> 630.752.5707  | 630.752.5987 FAX
> [log in to unmask]  |  http://library.wheaton.edu