Using QR codes on in-store tent cards, posters and cup sleeves, customers could scan to add Starbucks as a friend, then send the company an emoticon to be rewarded with a customized song designed to lift their mood.
The side is decided at Gleneagles in two weeks, although many of those still trying to grab a guaranteed place - Montgomerie has three wild cards - are staying in America for the start of the FedEx Cup play-offs, which do not count for points.
As well as the World Cup trophy, Spain will also fly home on Monday with the FIFA Fair Play Award after collecting only eight yellow cards in the tournament.