Dunkin' Donuts uses ambient scent to release the scent of their brew when a radio ad played, to help increase brand awareness in South Korea.

A South Korean Dunkin' Donuts campaign is reinventing the traditional radio advertisement using unique technology and the smell of coffee. The campaign, named, Flavor Radio releases coffee aroma via sound recognition technology.

Each time the Dunkin' Donuts radio ad was played a light coffee aroma was released using atomizers installed on commuter buses in Seoul. The aroma has reinforced the sensory connection and experience of the Dunkin' Donuts brand, and has boosted in-store traffic in South Korea. In fact, over than 350,000 people experienced the ad during the campaign, leading to number of visitors to the Dunkin' Donuts stores increasing by 16 percent and sales going up 29 percent.

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