K. K. Sangi wants to 鈥渁dd joy鈥� to the daily chore of brushing your teeth.
The Tokyo company鈥檚 new toothbrush (EP 787 469) has a low-voltage electrical
circuit which is closed by saliva during brushing. The closed circuit powers a
tiny transmitter, which in turn sends a radio trigger signal to a
battery-powered receiver by the bathroom sink. The receiver activates a tape or
CD player, which plays happy music. The music stops as soon as the user stops
brushing.