A bicycle pedal assembly includes a pedal and a cleat. The piston member has at least one sealing ring or seat arranged inside the distal cylinder barrel chamber at the distal cylinder barrel end. An avatar of a client is located within the three-dimensional space, the avatar being graphically represented by a three-dimensional figure within the three-dimensional space. Also disclosed is a method of use for the apparatus. The compounds can be coupled by ionic, covalent or H bonds to an agent to be delivered or to a ligand which forms a complex with the agent to be delivered. The parsing processor sends parsed packets to a network processor unit for further processing.