It's vacation season, and Coca-Cola has partnered with airport food-service company HMHost to launch a summer travel sweepstakes complete with Microsoft Tag. Travelers can scan Tags on the side of 32-ounce Coke cups and enter to win a trip to Orlando, Palm Springs, or Chicago. Plus part of the proceeds from Coke sales at more than 100 HMSHost travel venues will go to hunger relief charity Feeding America.

From now until September 15th, if you’re passing through one of HMSHost's airport or travel plaza restaurants, mall food courts, or the company’s retail newsstands and convenience stores – HMS Host has a presence in the 20 busiest airports in North America, among others – keep an eye out for the Tagged Coke cups. Scanning one will take you to a mobile-optimized site where you can enter to win an amazing vacation.

This is a great Tag retail implementation as part of an integrated mobile promotion that offers a strong incentive for participation – a key to the success of any Tag campaign. Not only are travelers rewarded for scanning a Tag with the chance to win a trip, but they also contribute to an important charity with their Coke purchase. The campaign is also complemented by signage that explains how Tag works and creates the call-to-action. For more tips and inspiration on how to use Tag in retail, visit the Tag blog.