An ad campaign against child abuse has become a hit internationally, since being posted almost two weeks ago.
The impact of the campaign has managed to cross country lines, since being debuted in Spain. It consists of street billboards showing two sets of messages, one for adults and one for children.
The clever system uses ink visible only from a certain angle, and takes into consideration children's height when displaying a message meant specifically for them.
Children are given out the number for emergency child abuse services, while it stays invisible for adults accompanying them.
"Sometimes child abuse is only visible to the child suffering it" is all the potential assailants can read off the street signs.
The campaign was devised by the Grey Spain ad agency for the ANARFoundation (Aid to Children and Adolescents at Risk), Prexamples writes.