Hidden cameras are small recording devices that are designed to capture video or audio without being easily noticed. They can be found in various places, such as homes, businesses, and public areas. People often use hidden cameras for security purposes, to monitor activities, or to catch wrongdoing. These cameras come in many forms, including smoke detectors, picture frames, and even toys. While they can be useful for safety, it's important to use them responsibly and respect the privacy of others. In some places, using hidden cameras without consent can lead to legal issues.