Watch this: the remarkable billboard that contains a hidden message for abused children

Details: 

In an effort to provide abused children with a safe way to reach out for help, a Spanish organization called the Aid to Children and Adolescents at Risk Foundation, or ANAR for short, created an ad that displays a different message for adults and children at the same time.

The secret behind the ad’s wizardry is a lenticular top layer, which shows different images at varying angles. So when an adult—or anyone taller than four feet, five inches—looks at it they only see the image of a sad child and the message: “sometimes, child abuse is only visible to the child suffering it.” But when a child looks at the ad, they see bruises on the boy’s face and a different message: “if somebody hurts you, phone us and we’ll help you” alongside the foundation’s phone number.

Read more.  And watch the video below that shows how it works.