US Patent 8105165 Controlling interaction between protected media

A method, gaming system, and computer program storage product are disclosed. At least one unique identifier is received from a remote processing system. The at least one remote unique identifier is associated with a remote software package that is on the remote processing system. The at least one remote unique identifier and a local unique identifier associated with a local software package on a local processing system are compared. The local software package corresponds to the remote software package. The at least one remote unique identifier indicates that the remote software package is one of a parent copy and a child copy of a software package executable. The local unique identifier indicates that the local software package is one of a parent copy and a child copy of the software package executable. An operation of the local software package is authorized based upon the comparing.