In explaining this rule, we have drawn upon the established ??distinction between a warrantless seizure in an open area and such a seizure on private premises.?? Payton v. New York, 445 U.S. 573, 587 (1980); see also id., at 586??587 (??It is also well settled that objects such as weapons or contraband found in a public place may be seized by the police without a warrant??).