Since last March 1st, in 2016, a new law has come into effect. This law tries to facilitate the obtaining of a crimes of a sexual nature certificate for citizens that work close to minors. This certificate gives credit to the lack of criminal records of this type. The main objective is to protect children from sexual aggressors convicted by a final judgement, in Spain as well as in other countries, and, in turn, to favour the international police cooperation against these crimes. Only at a national level, more than 43.700 people have criminal records related to these types of crimes.