High Power Rocketry Tracker

Hello, I’m Niranjan D R, an undergrad student from Bengaluru, India. I’m extremely delighted to join a great community of individuals who share common interests towards Space.
I was going through the High Power Rocketry Tracker Open Source project and I had a doubt.
When not in sight, will the telemetry from the rocket be used to track it, or should the visuals be used to track the trajectory of the rocket?
Thanks in advance.