In June 2009, Warner Bros. ran a Bluetooth-based marketing campaign to promote its summer comedy “The Hangover” across Britain. The one-week campaign featured the film’s trailer and was sent to mobile phones via Bluetooth. Consumers who walked into the proximity of a Bluetooth-enabled zone received an alert on their mobile phone asking if they would like to download a trailer for The Hangover. The main goal was to drive footfall to the cinema.

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