Systems and methods applicable, for instance, in interactive session provision. One or more nodes and/or other computers might, for example, provide to one or more other nodes and/or other computers the ability to employ certain software for an interactive session. A node and/or other computer providing the ability might, for instance, provide to a node and/or other computer receiving the ability software to be used in the interactive session, and/or one or more appropriate keys. A node and/or other computer that has received the ability might, for example, lose the ability with interactive session termination.