It provides a single sign on between the two systems with easy event creation and management. Action: Properties like title, description, author and submit url are not editable for signed, encrypted forms.
During its relatively short life so far (at least, as compared with physical books) Adobe digital editions have gathered a number of adherents, and copies in this format are still being sold at the time this article was published. So it seems that the failure of the DRM technology itself has not completely prejudiced the market against the Adobe digital editions format. Adobe Content Server is used as the host management system, but available hacks of the Adobe ePub DRM system were widely available from the offset. Adobe annouced with Adobe (https://srirejekifastboat.com/serial-code/?file=4918) Content Server 5 & Adobe Reader Mobile SDK 10 an improved and hardened DRM solution to protect PDF and ePub files from unauthorized viewing – this basically forces users to use an eReader built on RMSDK 10 and above. However many ePub DRM removal products claim to remove even this protection because they crack the ePub file directly and do no rely on a specific version of an eReader to do so.