Frictionless access control system with user tracking and Omni and dual probe directional antennas

An access control and user tracking system for a security system, the access control and user tracking system comprising:

• a verification and tracking system for receiving user information and generating authentication status information;
• and
• nodes, each comprising wireless interfaces, for receiving user information and device information from user devices via the wireless interfaces and sending and receiving the device information and the authentication status information to and from other nodes and the verification and tracking system, wherein the nodes exchange proximity information concerning how close the user devices are to each of the nodes and the nodes send the device information and the authentication status information to the nodes that are closest to the user device, wherein
• each of a plurality of nodes detects a particular user device based on wireless signals from the user device;
• each node that detected the user device generates proximity information for the detected user device by calculating an approximate distance between the detected user device and the node that detected the user device based on the wireless signals;
• each node that detected the user device sends the generated proximity information to other nodes and receives proximity information generated by the other nodes;
• each node that detected the user device determines which node is closest to the user device based on the generated and received proximity information;
• and
• a first node that detected the user device sends the authentication status information to a second node that detected the user device in response to determining that the user device has moved from being closest to the first node to being closest to the second node based on the proximity information.