A string device designed for, or combined with elements for, transfer of
power and/or signals in applications of monitoring, control,
communication, detection, measurement or power distribution. The device
provides a passive structural core element and at least two longitudinal
active elements, such as a conductors capable of signal transmission or
power distribution. The longitudinal active elements are positioned in
tracks on or adjacent the surface of the core element, so that they are
accessible to surrounding connectors.