Thermography Camera: A Sneaky Way to Detect a Car's Recent Use Wondering if a car has been used after it was parked? With a thermography camera, you can find out! Thermography uses infrared radiation to produce heat signature images of objects, which can reveal the temperature variations in a particular area. For a car, this means you can use a thermography camera to detect the heat under the hood and the wheels, indicating whether the car has been recently used or not. Thermography can be...