Korean retailer Emart had a problem: their sales declined during the lunch hour. To counter this, they developed a time sensitive QR code that relies upon the position of the sun to create a shadow based QR code.

Springwise has more:

Dubbed “Sunny Sale,” Emart’s effort involved setting up a series of what it calls “shadow” QR codes that depend on peak sunlight for proper viewing and were scannable only between 12 and 1 pm each day. Successfully scanning a code took consumers to a dedicated home page with special offers including a coupon worth USD 12. Purchases could then be made via smartphone for delivery direct to the consumer’s door.

Video below.

 

Originally posted by Dane Carlson on February 25, 2014 in Ideas.

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