A multi-tired, modular, electronic system which utilizes restricted usage management. In a multi-tiered environment, lower tiered systems contain, based on configuration, mobile units that are capable of performing simple tasks such as lawnmowers, vacuum cleaners, mobile audio/video players to more complex ones capable of performing as human assistants such as robots. Higher tiered systems typically reside in the cloud. Lower tiered mobile units contain modular sensors such as temperature sensor and image/video cameras that generate vast amount of data. The lower tiered mobile units also contain modular emitters that consume vast amount of data. Restrictions for the usage of these mobile units are sent, in the form of metadata, to the lower tiered mobile units, from an intermediate to higher tiered control devices and the rendering app may limit the usage. The intermediate tiered renderer can interact to make sure rules have been followed.