We developed a concept named "Xmas Card from Twitter" with wish for encouraging people who are not familiar with Twitter or who have never used Twitter to get interested in Twitter. We made this catchphrase "Merry Xmas Box."

We jacked the whole train with Christmas designs such as gift boxes, trees and snow gloves, some of them were actually handmade posters of motifs cut by the designers. We kept the design concept simple with glittering silver and Twitter’s light blue brand color.

We succeeded in motivating many people to share the poster on twitter and saw many tweets of passengers enjoying the Christmas atmosphere surprise in the crowded train. The campaign became a big success with participating brands and celebrities gaining over 850K followers.