We must bear in mind that its main function is to hide from the sight of anyone, going completely unnoticed by the human eye, so that others do not notice its presence, that is why what we must look for in a camera is as small as possible but at the You see offering us that it fulfills all the functions that it includes such as night vision, good image and video and audio quality. Hardware:Quality : For a spy camera we need the best and highest quality on the market, preferably from 720P, 1080P and the best option will be 4K.Night vision : A must have option for any spy camera.Movement : A sensor that allows us to detect any kind of movement.Microphone: Necessary to be able to record the sounds of our home.Speaker: We will need some speakers to reproduce the sound that it produces.Size: for a spy camera, the main thing would be to buy the smallest one on the market.Software:Motion detection: we can detect the movement of our surroundings.Monitoring : Your visibility and the way we see the cameraImage: We need the image to be as clear as possibleFrames per second: the higher the frames per second, the better the fluidity in which the image is seen, preferably 60 FPS.