A system and method that provides a user with the ability to transmit confidential information to an IVR system in a secure manner includes invoking an interactive voice response routine, the IVR routine determining each of the digits in the sequence by making successive queries andor digit guesses. A method for channel-coding information bits using a code generation matrix including 32 rows and A columns corresponding to length of the information bits includes, channel-coding the information bits having \u201cA\u201d length using basis sequences having 32-bit length corresponding to columns of the code generation matrix, and outputting the channel-coded result as an output sequence. A feedback circuit coupled to the combined, third output compares this combined, third output with a predetermined control signal and generates a control signal for controlling the high-speed power supply, based on a difference between the third output and the predetermined control signal. A conductive structure fills the shaped openings wherein the patterned and cured dielectric layer and the permanent antireflective coating each have a conductively filled region. 2 percent, calcium in an amount such that the ratio of tin to calcium of greater than 12:1, and silver in the range of greater than 0 to less than 0.