In a method and a device for identifying the fuel quality in a fuel tank of an internal combustion engine, a reference volume with fuel is provided, which does not intermix with the fuel in the fuel tank when the fuel tank is refilled. The system performs the cancellation of local echo signal in digital or analog domain depending on the loop condition using a switching logic. The second storage unit is used to execute the plurality of program codes. An edge mount board connector is mounted in the handle and is removably secured to the edge mounted contacts of the edge card. Upon receipt of the player’s selection, in accordance with one or more embodiments, a connection may be established between the gaming device and the provider of the selected entertainment service. The WLL terminal is capable of being used with a charger that has connectors for connecting the USB line driver and the USB of the terminal with an external device, such as a personal computer.