住在楼房，特别是高层住宅的住户，为了安全起见，往往需要在楼门口设立值班室，并配有值班人员对进出人员严格“把关”，以防止闲杂人员随便进出，这样可以有效地防止住户被盗或受到不应有的干扰。尽管这样，有时也难免会发生疏漏或受到作案分子的欺骗。代替值班人员把关，也 For safety reasons, tenants who live in buildings, especially high-rise buildings, often need to set up duty rooms at the entrances of their buildings. They also have on-duty staff to strictly check the entrances and exits to prevent casual workers from entering and leaving casually so as to effectively prevent residents Stolen or undue interference. In spite of this, it is inevitable that there may be omissions or fraudsters. Instead of duty staff check, also