QR Code Recognition Swing Gate Turnstile Smart Campus Visitor Access 550mm Wide Channel Product Description Visitor access in smart campuses, office towers and serviced apartment lobbies still depends on paper sign-in sheets and temporary access cards. Both slow the lobby down and both leave a security gap once a card is mislaid. The QR code recognition swing gate turnstile replaces that routine with appointment-linked digital passes: a visitor books online, receives a time
