One embodiment may include a machine for providing beverages. The machine may include a reader configured to read data representative of an available balance for a user to obtain beverages from the machine from a machine-readable medium and electronics. The electronics may be configured to receive the data from the machine-readable medium in response to the user positioning the machine-readable medium within reading distance of the reader, enable the user to dispense a beverage into a vessel, and update the available balance of the machine-readable medium so as to reduce or prevent the user from dispensing unlimited beverages.