Exemplary embodiments are directed to support devices to be worn by a user. A nanostructure in another embodiment includes a substrate having an area with a nanofeature; and a nanowire extending from the nanofeature, the nanowire having metallic spheres formed therein, the spheres being characterized as having at least one of about a uniform diameter and about a uniform spacing there between. This allows a number of possible combinations for the kinematics of the arm. A power source line is connected with a cathode electrode of the OLED for providing a voltage of either a high state or a low state. In some cases the first user can add and list contacts accessed by browsing the contacts associated with the second user.