The Kijkwijzer ratings are, first and foremost, a tool and an advice: they empower you to decide for yourself what (not) to watch. In public spaces, however - such as stores, cinemas and libraries - a law has been attached to the Kijkwijzer ratings: article 240a of the Criminal Code. Due to article 240a, children under 16 are not allowed to see a film that's rated 16 or higher - not even if they're accompanied by an adult.
Rules for cinemas
According to article 240a, children under 16 are not allowed to see a cinematic feature film if it's been rated 16 or 18 - not even if they're accompanied by an adult. Employees are allowed to ask for ID to check a visitor's age.
Films with lower ratings (6, 9, 12 and 14) may be seen by children under the film's age rating if they are accompanied by an adult.
Rules for retailers and libraries
The same rules apply to retail stores and libraries. They may not distribute DVD's or games to children under the Kijkwijzer or PEGI age rating.