The Passport Photo Creator allows users to adjust the shutter exposure. Increasing or decreasing the exposure settings will help minimize the hotspot errors. You can raise exposure to .05 or 1.0 to achieve a brighter background. The exposure setting also allows users to raise the temperature to show a lighter background without any digital altering. Both photos below are taken on the same wall with the exposure settings adjusted and raised to 1.0 in the second image for a better quality passport photo.
This photo below is even better as the background is closer to white.