Israel-based On Track Innovations Ltd, which sells contactless payment systems, has introduced a key fob that includes a small, three-dimensional football as a tie-in with the upcoming FIFA World Cup. Taiwan's Taipei Fubon Bank is issuing the fobs under MasterCard International's PayPass brand and bank customers can use them to make purchases by tapping them on readers at local merchants. Those who use the fobs to make PayPass purchases are entered into a contest to win football-related prizes, including a trip to Germany to see this year's tournament, Card Technology reported.