A new poster released by Spanish organisation the Anar Foundation has been created to help children suffering from neglect or abuse to access help and support information – without their accompanying adults finding out.

The posters contain a secret message visible only to those under a certain height, containing a helpline and a message stating “If anybody hurts you, call us and we’ll help” alongside a picture of a child with bruises that are only visible alongside the message. The campaign was designed to prevent potentially abusive guardians dissuading children from calling.

The posters were created using lenticular printing, a form of printing which has had widespread use over the years as “holographic” stickers; however this is the first time it has been used as such a fundamental part of an outreach attempt. It is hoped that the posters will help to give children confidence to call and ask for help, without worrying that the adult suspects them.