Abstract: Disclosed are multi-tenant networked security systems and methods. The system includes a central server, a first user application provided on a first computing device, and a second user application provided on a second computer device, wherein the first and second computing devices are communicatively linked with the central server. The system further includes a persistent network key generated by the central server and based at least in part on a unique request identifier and a transient physical key generated by the first user application and based at least in part on the network key, wherein the network key is received by the first user application. The second user application is configured to communicate with the central server to analyze the network key and the physical key in order to verify that a user of the first user application possesses an ingress permission to an access point.

Abstract: Examples of the present disclosure describe systems and methods related to a decision engine. In an example, proposals, work orders, invoices, and assets may be managed by the decision engine, such that recommendations may be generated and automatic actions may be performed on behalf of a subscriber. For example, a model may be trained based on historical data, which may be used to generate recommendations as to whether proposal should be approved or rejected. In examples, the proposal may be presented along with additional information, such as asset information or information relating to similar proposals, thereby enabling improved decision making. In other examples, invoice approval rules may be generated based on the historical information applied to invoices as they are received from contractors, which reduces the amount of manual effort involved in approving and rejecting invoices.