Device authentication may be provided. A mobile computing device may read a device ID from a dispensing device (e.g., a beverage dispenser, kiosk, ATM, etc.) wirelessly when the mobile computing device is placed in close proximity to the dispensing device. The mobile computing device may send the device ID along with a user ID to a server in a notification from the mobile computing device. Using the user ID, the server may look up user preferences from a table on the server. User preferences may be sent from the mobile computing device to the server. The server may send the user preferences to the dispensing device that corresponds to the device ID. In response, the dispensing device may display a customized user interface based upon the user preferences.