What are the implications of the Fourth Amendment in the context of search and seizure?

"The Fourth Amendment to the United States Constitution provides that `The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated . . . .' The protections afforded by the Fourth Amendment have been held to be applicable to the states through the due process clause of the Fourteenth Amendment. [Citation.] In deciding the reasonableness of the search and seizure at issue here, we are bound by the lower court's findings of fact so long as they are supported by substantial evidence. [Citation.] We determine independently, however, the legal issue of whether, on the facts found, the search was reasonable within the meaning of the Constitution. [Citation.]" (People v. Gorrostieta (1993) 19 Cal.App.4th 71, 80; see also Ornelas v. U.S. (1996) 517 U.S. 690 [116 S.Ct. 1657, 134 L.Ed.2d 911].)