A method, system, and program for billing a caller for use of an origin device are provided. Usage, of at least one measurable element of a telephony device by an identified individual, is tracked, where the identified individual is distinct from an owner of the origin telephony device. A tariff for the tracked usage is transferred to an intermediary device. The intermediary device charges the tariff according to a billing plan for the identified individual, such that the owner is compensated for use of at least one measurable element of the owner's telephony device. Measurable elements may include the time the telephony device is in the identified individual's possession, the battery usage, and usage of the address book.