Abstract: A security management system of a restricted-access facility includes a security node operated by a security officer, an occupant node operated by an occupant of the facility; a visitor node operated by a visitor, a server having a processor and database, operative to process information including visit data being any one or combination of a visit invitation to the visitor node from the occupant node, a visit request to the occupant from the visitor node or from the visitor through the security node, and generate a visitor pass defined by a QR code, and an online platform operated by the server and accessible by the security node, occupant node and visitor node, capable of receiving information inputs and displaying the information.

Abstract: An electronic platform system includes: at least one cloud database connected to a communication network; a store platform connected to cloud database via the communication network, configured to display a list of products and/or services for a user to select; a payment platform connected to the store platform via the communication network, configured to allow the user to make a purchase directly from the store platform; and an application server connected to the cloud database via the communication network.