Prohibits a governmental agent from entering real property that is owned or occupied by a landowner without a warrant. Provides certain exceptions. Requires a governmental agent, upon entering real property, to: (1) take reasonable action to notify the landowner that the governmental agent has entered; (2) show the landowner a copy of the warrant, if applicable; and (3) activate any law enforcement recording device that is issued to the governmental agent. Provides that evidence obtained by entry on real property without a warrant or without a valid exception is inadmissible. Provides that a person may not be arrested if the probable cause for the arrest results solely from entry on real property without a warrant or valid exception. Establishes a civil cause of action if a governmental agent enters real property without a warrant or valid exception.