Particles that always move at superluminal speed are referred to as Tachyons. The temporal sequence of the endpoints of their movements depends on the respective reference system. Although Tachyons cannot transmit information, they create a connection over arbitrarily large distances without violating causality. This concept is closely related to the Einstein-Podolsky-Rosen paradox. While ordinary particles are characterized by their rest mass, a Tachyon is defined by an impulse parameter.