A multiuse system for use with Wireless Display Tags includes, in one or more exemplary arrangements, techniques for automatically maintaining synchronicity between pricing data for a product and advertising, marketing or promotional data associated with that product, and for detecting the proximity and location of a customer within a category of goods displayed within a managed environment. When in the open position, a lamp is supported by the limb. Shear wave propagation through the subject is determined from this information and mechanical properties related to \u201cstiffness\u201d of the subject are determined. The posts pivot between a first position wherein the picnic table rests upon the ground and a second position wherein the picnic table is raised for wheeled transport.