The Josef Fritzl case has spurred Austrian legislators to initiate changes in sex crime laws to prevent child abuse, the BBC reports. As Fritzl kept his daughter imprisoned as a sex slave, he was granted custody for three of the children he fathered with her— despite a rape conviction. His conviction was wiped off the books after 15 years. Austria now wants to keep sex crime records for at least 30 years. (More Austria stories.)