A telescopic optical sight for aiming a weapon at a target is described. Each cooling station has a housing for being installed in the support surface and a cooling disc assembly mounted on the housing. A method of boosting signal strength of a conventional subscriber module radio antenna and a wireless communication system are also disclosed. The structural body may be tubular and preferably has a trapezoidal cross-section. Using a button or knob to move the tube automatically triggers the ejector shaft to eject the device when the tube is in the correct position. The method may include receiving information about at least one merchant, enabling play of a game by a player, determining merchant information to communicate to the player, and providing at least one entitlement to the player.