A system and method for purchasing credits is described. The method includes receiving an electronic transaction request instruction by a mobile electronic transaction terminals. Each electronic transaction terminals includes a display and is in exclusive electronic communication with a secure gateway. The method proceeds to generate an electronic transaction request for an electronic transaction using the electronic transaction request instruction. The method then communicates the electronic transaction request from the secure gateway to a financial account server. At the secure gateway, an electronic transaction approval from the financial account server is received. The secure gateway then generates an authorization to dispense credits. The authorization to dispense credits is communicated from the secure gateway to at least one mobile electronic transaction terminal. Credits are then dispensed, wherein the credits are associated with a credit system located at an activity table.