Hidden Surveillance Cameras
The hidden or Spy cameras are normally used where you do not want people to see them, although you are required to put up a sign for people to know that they are being watched and / or recorded by video cameras. There are numerous shapes, forms and sizes of these cameras. The most common ones are those pictured here, including a sample of wireless camera.
The latest hidden cameras have up to 4 hours of recording capacity, and yet it is so small and tiny.