DECISION ORDER
ORDERED that the judgment is affirmed.
The defendant was arrested, without a warrant, at a public homeless shelter in Brooklyn. Entry to the shelter was controlled by a sign-in blotter and a metal detector, which were maintained by the shelter's employees. The supervisor of the shelter consented to the arresting detective's entry into the shelter, and the shelter's supervising guard escorted the detective to the room and bed to which the defendant had been assigned. There were no doors or locks preventing entry onto the floors or into the rooms in which the shelter's inhabitants were assigned.
The defendant's contention that the shelter's supervisor and guard supervisor were not authorized to consent to the detective's entry to the shelter or to his room is unpreserved for appellate review (see CPL 470.05; People v. Udzinski, 146 A.D.2d 245) . In any event, the defendant's contention is without merit. The shelter's supervisor and guard supervisor, by virtue of their control over access to the shelter and the shelter's rooms, and their maintenance of the sign-in blotter and metal detectors, were authorized by the shelter's inhabitants to consent to the entry into the shelter and the rooms by anyone who had legitimate business there (see People v. Nalbandian, 188 A.D.2d 328). Accordingly, since the detective had obtained the voluntary consent of both the shelter's supervisor and the guard supervisor to enter the shelter and the room to which the defendant was assigned, the defendant's warrantless arrest was proper (see People v. Cosme, 48 N.Y.2d 286; People v. Nalbandian, supra).
In any event, to invoke the protection of the Fourth Amendment, a defendant must exhibit an actual expectation of privacy, which society is prepared to recognize as reasonable (see Minnesota v. Olson, 495 U.S. 91; People v. Ramirez-Portoreal, 88 N.Y.2d 99) . The defendant did not have any reasonable expectation of privacy in his room or bed at the shelter, given the semi-public nature of the living area (see People v. Nalbandian, supra).
The contentions raised by the defendant in his supplemental pro se brief either were waived by him (see CPL 190.50[c]; People v. Ali, 292 A.D.2d 538, lv denied 98 N.Y.2d 729) or are without merit (see People v. Morales, 228 A.D.2d 704; People v. Rohan, 214 A.D.2d 755).
ALTMAN, J.P., S. MILLER, ADAMS and COZIER, JJ., concur.