摘要：Copy protection of digital content is moving from a concept of inhibiting consumers
from making copies (or at least trying to do so) by technological protection measures (TPM)
towards a concept of detecting illegal use. In case illegal use is detected, a type of "punishment"
may follow: the content may suffer quality degradation, or ¨C in the case of software ¨C it may
behave in a strange, annoying manner. In the best of cases the infringing user facing this kind
of punishment is at the same time encouraged to obtain a legal copy. The article reviews the
present state of this new concept in the area of game software.
