A high speed information transfer method and system that encode volumes of information into electromagnetic radiation, successfully transmits the electromagnetic radiation and decodes the electromagnetic radiation back into information. In a preferred embodiment, a notice of an incoming call received from a server at a data processing system. Members belong to rooms, and are those users authorized to access them. The scheme embeds the message as specified by a pseudo random generator. A second guide member is formed on the second member and cooperates with the first guide member to permit the second member to move vertically relative to the first member.