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Digital agency Marvellous has created a new iPhone application for Grolsch aimed at promoting responsible drinking.

The application uses the iPhone’s accelerometer to demonstrate if the person holding the phone can walk in a straight line.

The  tongue-in-cheek approach was devised by Marvellous’ Amsterdam office for the  Dutch brewing giant.
 
While not an actual alcohol test, the app aims to encourage festival-goers to think about their alcohol consumption in a fun way.
 
Grolsch is backing the launch with a field marketing campaign at major music festivals in the Netherlands  during the summer.