The present disclosure provides test strip carriers for insertion into test strip vials and methods of making the same. A method for transmitting content data includes receiving content data, and passing at least a portion of the content data based on a prescribed rate. Once an operative state is determined for a control element, the focus state of the control element is detected and merged with the operative state to generate a theme state for the control element. A processor receives the signals P and determines an average acoustic energy {tilde over } at at least one position x over a time interval where {tilde over }is determined in an algorithm involving at least one of the signals P. The method also includes comparing the operating speed to a trigger speed.