14. The system of claim 13 , further comprising: a second device separate from the first device, the second device being configured to communicate with a remote entity and to receive the code, the code being used as part of the one or more transactions; and wherein the code received by the second device is entered into the first device via rotation of the control knob of the first device.
14. The system of claim 13 , further comprising: a second device separate from the first device, the second device being configured to communicate with a remote entity and to receive the code, the code being used as part of the one or more transactions; and wherein the code received by the second device is entered into the first device via rotation of the control knob of the first device. 16. The system of claim 14 , wherein the second device comprises a display to present a user interface, and the code is entered into the first device via the user interface on the second device.