A security bar providing improved security from breach is obtained with
the use of a plurality of free rolling inner bars. Illustratively, three
inner rolling bars, arranged in a triangular relationship, are provided
inside a cylindrically hollowed out outer bar, thereby ensuring that no
inner bar can be attacked simultaneously from opposing sides thereof. The
inner bars may be surrounded with a ring of ball bearings to provide for
their ability to roll freely in place with respect to the outer bar.
Electronic monitoring of the security bar identifies attempts to breach
the security bar.