Fecha de publicación: 30/11/2006 Fuente: Wipo "digitalization" A method, system and software for enforcing execution of executable code in accordance with usage rights, including receiving a request generated by a user computing device to execute the executable code, and determining by a repository included in the user computing device whether the request should be granted based on usage rights associated with the executable code. The usage rights include a manner of use indicating a specific instance of how the executable code can be executed. The executable code is executed on the user computing device in accordance with the manner of use, if it is determined that the request should be granted. The request and the executing are accomplished through an interface. The executable code is executed in an address space of the user computing device. The user computing device is permitted to access the executable code only through the interface.