A pneumatic practice tee and method of practicing the striking of a sports ball with a striking instrument using the tee. In accordance with an exemplary embodiment of the invention, a method for fabricating a memory device comprises the steps of fabricating a first gate stack and a second gate stack overlying a substrate. In response to detecting the radio frequency transmission from the other mobile device, a ring tone used by the other mobile device is identified to form an identified ring tone. A gate dielectric is formed-over the first region of n-type silicon carbide and at least a portion of the second region of n-type silicon carbide. Each cam element has a cam portion which is engageable through an opening in a keeper to latchingly engage behind a cam engagement surface associated with the opening. As the wireless communication unit, either an optical method using infrared rays or the like, or a radio wave method using a radio wave can be used.