To enhance our recycling program on campus, we sell reusable beverage cups for use in the new Marketplace in the student union. Each cup is embedded with an RFID chip that allows students to obtain prepaid refills from our Freestyle Coke machines. For example, a five-drink recharge is $4.99. The chip is activated whenever a cup is brought in proximity to one of the five machines in the Marketplace; there is a 10-minute delay in between refills. We sold more than 300 cups in the first two weeks of service.