???????????? ???? ???????? ????????/??????? ???????? ??????? ???????/???????????? ???? ?? ?????? ???? ????????? ??????????. ?? ???????? ??????? ?? ????????? ??? ?????? ??? ?????????????????????? ?????? ??? ?? ??????????? ??? ?? ????????????? ?????????? ??? ????????? ??? ?????? ??? ??????? ????????.Utilized to detect In case the visitor has recogniz