This is one of those features that will go unnoticed by most. We have added additional security features into the software. You dont have to do anything different to use this feature - it happens automatically.
People who will notice a difference are people who are running an older version of the software installed on their computer. These people will get error messages every time they access the web site. The new security features are incompatible with the older software.
For those people, we have added instructions on how to update their software here
https://www.renthq.net/support/update.aspx
One aspect of this new security is that if you remain logged into the software for a long time (we are talking about days here) you will automatically get logged out and have to log back in again.