Semiconductor devices are described that include a via that extends only partially through the substrate. The plurality of elastic rings extend circumferentially around the ball body. The typical cell described uses the \u201cChannel Accelerated Carrier Tunneling method for programming memories\u201d for accumulating one type of carriers in the floating gate, and another method, the Tunnel Gun method, for accumulating the other type of carriers in the floating gate of the cells. The mobile viewing system receives a request message from the server and captures an image via an image capture module according to the request message. Methods for producing a rubber latex composition having reduced allergenicity are also disclosed.