If you do allow transfer to portable device, you can restrict the number of transfers that are allowed. Packaged files that are copied to a CD are no longer secure. Do not allow the backup and restoration of licenses. The backup and restore feature is primarily for those consumers who purchase multimedia files and want to have backups of their licenses. You should set up a different method of reissuing licenses to those consumers who lose their licenses.
Applications are available that allow a consumer to save a streamed file to their computer.
This date ensures that the consumer can play the multimedia file as it is streamed, but a saved stream will not be playable past the expiration date you set. Rights must be set differently if you issue version 1 licenses. Set rights using the varRights parameter of the LicenseGenerator. Expiration is set by using the varNumDaysToExpiry parameter of the LicenseGenerator. You cannot specify an expiration date, but rather an expiration period in days.