Is it illegal for the property to force the installation of neighborhood app to open the door?

Whether it is illegal to install the neighborhood app in the property to open the door should be determined according to the specific situation. If the property is forced to install the neighborhood app to open the door for the purpose of maintaining the security and management order of the community, and this behavior does not violate relevant laws and regulations, then this behavior may not constitute an illegal act. However, if the compulsory installation of the neighborhood app to open the door violates relevant laws and regulations, or infringes on the legitimate rights and interests of the owners, then this behavior may constitute an illegal act.

Therefore, if the compulsory installation of the neighborhood app in the property violates relevant laws and regulations, or infringes on the legitimate rights and interests of the owners, then the owners can safeguard their legitimate rights and interests through legal channels.