Yeah, the mmWave sensors are a good step forward for detection presence compared to PIR, especially being able to define behavior based on multiple zones, although the latency is extremely high compared to PIR/ultrasonic. I was hoping to replace my PIR sensor with the FP2, but in the end I’m having to run both — PIR for instant on lights when entering room and mmWave for not leaving me in the dark when I’m at my desk working.
With that said, even if we mmWave sensors see significant improvements to latency, cost, and power consumption, I’m fairly convinced that it alone will never give me a completely satisfactory solution to presence. My garage/home office situation may be unique (or not), but I’ll always need a synthesis of multiple inputs/cues (SPL monitor, active BT connections, contact sensor activity, etc). Gotta love the lights shutting off abruptly while soldering audio equipment b/c I was laying down on the floor in the corner, and rather still, instead of doing normal human things. As with all good problems, just throw another abstraction layer at it :)
My dream is that the lights in my long hallway gradually dim up in front of me and back down behind me as I walk.