A system and method of displaying multiple, concurrent instant messaging sessions is described. The casing has a receiving room and an opening connected to the receiving room. The case can receive and immobilize, additionally to a CD, a tag bearing complementary data concerning the CD, transparently seen through the wall against which is pressed the recorded side of the CD to be housed and protected, by a conical inner surface retaining the tag through the base of a cone, and whereof the outside is square, hexagonal, or octagonal. The invention extends to a machine-readable medium embodying a set of instructions for executing the method and to an interconnect device. The methods, devices and systems and methods of the present invention maintain the accessibility and integrity of equipment contained in underground housings by providing at least one barrier that prevents burrowing animals from off-loading displaced ground dirt or other debris into the space created by the underground housing.