Disclosed herein are systems, methods, and non-transitory computer-readable storage media for enabling gift card recipients to redeem gift card amounts using existing accounts such as a creditdebit card. In one example, a method of manufacturing a PCB having a die assembly embedded therein includes removing a release film from an adhesive layer of the die assembly. Alternate power sources include battery power and alternating current power transformed by a transformer into direct current power. In a MOS unit region, an output unit region including an output unit having a side longer than the other side which crosses the one side of the rectangle of the photodiode region is arranged on the other side. Fruits can be consumed crunchy or melting.