Here’s the difference between a PIR motion sensor and a presence detector.
In my office, I have a Nedis PIR (TuYa TS0202), that I combined with a binary
sensor that tracked my monitor’s on/off state, to derive my presence, especially
during Zoom meetings where I would sit esssentially motionless, and I don’t want the lights to go out.
I installed an Everything Presence Lite just for testing, and here you can see the results during two hours of consecutive meetings. I stepped out for a minute or so between meetings, and the presence sensor never gave a false negative.
Roman