This camera will detect human shapes in absolute darkness or full light. It also seems to see bodies when there is nothing there the naked eye can see. (Spirits?)  You can record video directly to the tablet and save to an SD card.    The sensor runs off of a rechargeable battery pack for up to 4 hours of continuous use (depending on settings).
 

Here's how it works: It uses an RGB camera with depth sensor and infrared light projector with a monochrome CMOS sensor which sees everything not as a flat image, but as dots arranged in a 3D environment. These 1000's of infrared dots allow the camera to "see" depth and detail like a sonar.   The installed software can recognize people by distinguishing body parts, joints and movements.    If shows a person shaped object on the screen that you cannot see with the naked eye then there is something there the IR is detecting and the programing is recognized as a human shape based on body parts and joints together.

The Canon XA11 Full HD Camcorder is a compact run-and-gun camera that is suitable for ENG, event coverage, and independent and documentary filmmaking. The camera features a 1/2.84", 1920 x 1080 CMOS sensor that captures video at various frame rates up to 59.94p, including a 24p mode for a more cinematic feel. The integrated Canon 20x HD optical zoom lens has a 35mm equivalent zoom range of 26.8 to 576mm and features an 8-bladed iris to render highlights more naturally. With night vision.

The DCR-TRV240 delivers all the benefits of Digital8 recording quality in a smaller chassis. Design includes an intelligent accessory shoe, an enhanced 25X optical/700X digital zoom, and backwards compatibility with your existing Hi8/D8 tapes. The DCR-TRV240 also provides Sony's new USB streaming feature and the flexibility of Super NightShot 0 Lux mode and Color Mode in addition to a Super SteadyShot Picture Stabilization System. Sony's new USB Image Capture Function lets you stream live and recorded images to your PC and send them through e-mail.

Sony Cyber-Shot 828 7.2 Megapixel digital camera with 3X optical zoom, that has been professionally converted to be a near-infrared camera  - for use in ghost hunting and other applications (such as forensics,  photographing in total darkness without being seen, etc.).

One of the most useful applications of the IR spectrum is in sensing and detection. All objects on Earth emit IR radiation in the form of heat. This can be detected by electronic sensors, such as those used in night vision goggles and infrared cameras.