The most common types of CCTV are the hidden ones, the main characteristic of which is the small size. This hidden surveillance camera has small dimensions (about 2 x 2 cm) as well as a fixed lens.

The pinhole camera (or pinhole camera) is able to capture a secret image from behind a 4mm hole because of its small body size and small lens. Like other livestock and industrial cameras, this CCTV is not of high quality and is mostly installed in small environments with good light (in secret).