Your University ID card can also be used for other purposes. A FLEX Account may be activated to put money on your identification card for the purpose of: making personal copies at the copy machines; purchasing items at the University Bookstores, including the ESM Bookstore/River Campus Computer Store; and purchases at various ESM/UR food services/vending machines. . To activate your identification card, you must initially call: 275-3975. You may transfer money to your ID card by giving a credit card number and amount to the ID Card Flex Personnel and /or once you call and activate your card, you may put cash into the VTS machines to add credit to your card.