Using hidden cameras in your home is legal, in most cases. You should always review local laws and regulations for the state in which you live, they differ from location to location. But as long as you’re not recording a bathroom, bedroom or similar private space you should be fine. The exception to this would be a rented property, including Airbnb properties. Even if you own the property you cannot record others in a private space without their consent. Installing the camera in a public space should also be fine, such as the front of your property or street. Audio is a bit more complex, which is precisely why none of the cameras on this list record any audio.