A point-of-sale self-checkout terminal includes a code reader device for automated entry of a product identification code present on items for purchase and a customer input device for receipt of data from a customer. The device comprises a support bar and a leg between the toilet bowl and the floor, wherein the device is placed underneath the toilet and affixed to a toilet wall support. An axial length of the lever assembly is shorter than an axial length of the wiper strip. Upon determining that the device is being held in the hand of user, the audio equalizer performs upward tilt equalization on an audio signal being played by the device through the speaker. A photoresist is applied to protect the bipolar area and the structure is etched to remove the sacrificial layer from the CMOS area only such that the top surface of the sacrificial layer on the bipolar area is substantially flush with the top surface of the CMOS area.