I represent a company providing software for electronic reserves, so will do my best to answer as many questions as applicable to help contribute. Our Fusion Digital Library software is the primary software application required to support our electronic reserves system. We provide the best technological tools available to enforce copyrights. The expiration basically allows the digital library to model existing libraries in the sense that after a set time period or a certain number of uses, the file is no longer available to the user. So, in a nutshell, our software lets libraries open or restrict access as much or as little as they like.
Libraries can, if they choose, grant access to users off-site.
There can be no limitation imposed on there access, or the software can be configured to only accept connections from remote computers with certain IP addresses. Thanks, and I look forward to seeing the results.