It is generally legal to install a video camera in your home to monitor a babysitter or nanny, and does not require the consent of the babysitter or nanny. But it is generally illegal to place such a camera in private places such as bathrooms or a live-in nanny’s bedroom. And in some states that require both parties to consent to the recording of a conversation, it is illegal to place a camera or other device in your home that records audio without the consent (preferably in writing) of your babysitter or nanny. These states that require two-way consent to record conversations (your consent and the babysitter or nanny’s consent) include California, Connecticut, Delaware, Florida, Hawaii, Illinois, Louisiana, Maryland, Massachusetts, Montana, Nevada, New Hampshire, Oregon, Pennsylvania, and Washington.

In Ohio, it is generally legal to install a video camera in your home for the purposes of monitoring a babysitter or nanny. This is considered a measure to ensure the safety of children and property, and does not require the consent of the babysitter or nanny. However, Ohio law prohibits the installation of cameras in private spaces where an individual has a reasonable expectation of privacy, such as bathrooms or a live-in nanny's bedroom. Regarding audio recording, Ohio is a one-party consent state, which means that only one party involved in the conversation needs to consent to the recording. Therefore, it is legal to record audio with a camera as long as the homeowner consents to it. However, it is always recommended to inform any babysitter or nanny about the presence of cameras, especially if they also record audio, to avoid any potential legal issues or claims of privacy violation.