In which situation is it not reasonable to expect privacy?

Privacy expectations are grounded in legal principles and societal norms regarding what individuals reasonably believe they should keep private. Displaying items out of a window does not present a reasonable expectation of privacy because such a display is in plain view of the public. People outside can easily see those items, which diminishes any claim to privacy.

When a person displays items through a window, they are making those items accessible to anyone passing by, thereby relinquishing their right to keep that information private. In contrast, actions such as concealing items inside your home, locking personal items in a suitcase, or covering items while in a car all suggest a reasonable belief that these items are private. These actions are taken to protect privacy and indicate an expectation of confidentiality that society recognizes as valid.