The authors distinguish three types of media ethics: Applied ethics which focusses situations and raises nor-mative questions depending on a particular situation; application-centered ethics, which supports or warns users, and the classical ethics of autonomy which gives new spheres for actions. For ethical challenges of UbiComp the third type is most important. UbiComp reduces the intentions of the user by decontextualizing the context of action. The actor is confronted with an "informed" reality. It is a problem, when there is no explicit delegation of services to the system and the media "clues" are disappearing and we don't see that reality is augmented. It is the first commandment of media ethics to show the clues of media via which it is possible to reconstruct the spheres which give possibilities for action. Concerning UbiComp, media ethics has to demand compensatory institutions like the concept of parallel communication, which allows for negotiating metacommunicatively on the communication processes delegated to smart systems.