Once an offender has served his or her sentence, it has been argued, the punishment has ended. Sex offender notification laws allow a criminal sentence to continue as long as the offender lives, thereby continuing to "punish" the ex-offender through civil restrictions. Court challenges have largely upheld this practice. Is there an alternative to the sex offender notification laws? If so, explain. If not, explain why the practice is necessary. What ethical concerns, if any exist in this situation?