A system for messaging, which comprises mobile computing devices of different users connected to each other in a network with each mobile device having a text input unit. The first connecting device defines a first through hole. The rider in position, holding the handlebar 4, sitting on a seat 14 or standing on foot pegs 15, similar to riding a bicycle, controls the sliding element in a way similar to how snowboarders interact with their sliding element. The apparatus also includes a controller.