A system and method are provided for on-demand media streaming from a user’s own media library to a user’s receiving device that may be located in a different location from that where the media library is stored. Each cavity is adapted to electromagnetically isolate an electronic component therein from cavities on an opposite side of the shielding body and from cavities on the same side of the shielding body. An indication that the lottery number combination is to be associated with a limited number of occurrences is also received. The differences in intensity and polarization between transmitted and received waves are measured and carry geological information. The external sliding base includes an external press pillar disposed separately on both corresponding ends of the concave groove. The method further includes iteratively determining a sequence order for each limit key using the current normalized internal keys and the new normalized limit keys and using the sequence order of each limit key to generate commands used to change the value of each limit key from the current value to the new value.