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Connection Monitor is a software solution in the RTLS Toolbox which allows monitoring Bluetooth Low Energy communications. Connection monitor enables you to collect data such as signal strength or RSSI from wireless Bluetooth Low Energy traffic. This data can be used to estimate the distance between the connection monitor and Bluetooth Low Energy-enabled devices.

In terms of vehicle access, this proves especially useful for monitoring the wireless Bluetooth Low Energy communication between a phone and a car. Let's look at an example of how a connection between a phone and a car interacts with Connection Monitor. As the user approaches the car, the phone and the vehicle access system establish a Bluetooth Low Energy connection. The vehicle access system then shares the connection parameters such as the Bluetooth Low Energy hopping frequency with the connection monitor nodes. Once the nodes have received the connection parameters, they begin collecting and reporting data to the vehicle access system.

As the phone gets closer to the car, the vehicle access system can utilize the real-time data to apply techniques such as trilateration. This allows the vehicle access system to determine the relative location of the phone and when to permit certain actions such as unlocking or starting the car. To learn more about how you can implement TI's Connection Monitor and other solutions in the RTLS toolbox, visit ti.com/rtlstoolbox.