A three-month trial run of a new marketing agreement between The Giant Co. and A3 Mediaco LLC in grocery store locations that serve alcoholic drinks has been extended for another year. The shelf-tag technology, known as Social Shelf, allows buyers to scan a QR code displayed on a shelf tag to be sent to a website that offers a 30- to 40-second video with further information about the product. For the time being, the technology will only be applicable to beer and wine, but Giant may consider expanding to other product categories in the future. Companies that use the Social Shelf technology may now provide more information to potential consumers without forcing them to watch advertisements. The Social Shelf app not only allows retailers to communicate with consumers, but it also allows them to view real-time information about those customers.