With White app, you can use your monitor to trace images or patterns. This little windows application is simple to use. Once installed, just click the tray icon to show white screen and press ESC key to exit. Use it to view slides, photo negatives and X-Rays. You can also turn your computer monitor as a Lightbox with out the use of White app. You can do this with solid white desktop background image. It will bring the same effect on your screen. So, download or create a white background image and set it as your wallpaper. However, with White app, you can enable and disable it with two clicks. If you are interested, download White from Donationcoder or from here. The application weighs around 200KB, so it won’t eat up your computer resource. You can use your Android smartphone and tablet as Light box. For example, you can use the app like the Lightbox free (download link), or Lightbox (download link) to turn your phone into a Lightbox. So that, you can use your phone as a handy tool to view slides, photo negatives and X-Rays. These application will be great for checking your 120/220/620 Lomography (Lomo) Negatives. However, note that you can’t use your phone as a light table and take a digital camera to digitalize your old photos, because the display on the phone will cause for Moiré patterns within the digital image, so the images won’t be useful.