Thermal cameras capture images based solely on the heat radiating from organic and inorganic objects. And because thermal imaging technology doesn't depend on what’s visible to the human eye, these cameras aren’t sensitive to challenging light conditions such as total darkness, shadows, and glaring light. This also means that it’s possible to see through smoke and light fog. Additionally, they don’t create images that allow individuals to be identified, so they can be used for surveillance without compromising personal integrity.