The legality of using a hidden camera in a public setting varies depending on the location and circumstances of the recording. In general, it is legal to record in public areas where there is no reasonable expectation of privacy, such as parks, sidewalks, or streets. However, it is illegal to record in areas where there is a reasonable expectation of privacy, such as restrooms or changing rooms. It is also illegal to record conversations without the consent of all parties in areas where there is a reasonable expectation of privacy.
Before using a hidden camera in a public setting, it is important to research local laws and regulations to ensure that the recording is legal. Additionally, it is important to consider the ethical implications of recording in public and respect the privacy of others. It is recommended to use hidden cameras in public settings only for legitimate reasons, such as investigating a crime or protecting personal property.