Ya, the radar does trigger/record on a person if there is an impact.
It works fine since I normally back in when parked at home, so a person walking by to an adjacent car and slamming their door into mine will be captured.
At work, I have to park head-in in the structure, so I get a lot of recordings of loud cars passing on the other side, but I generally grab an end space up against the wall and tweak my angle a bit so there's actually enough room to ride a bike between my car and the next parking spot. Only real risk of impact would be someone from the other side backing into me.
Overall, I am very happy with the setup. My only complaint is the limited cloud support.
I would gladly pay a fair subscription fee... even $100/year... to have a useful/flexible cloud functionality along the lines of Blackvue.
One thing I really wish it did was upload parking recording clips when the camera reconnects to the hotspot.... and also better error correcting logic on driving impact uploads.
I've tested the app notification and video upload while on the road by rapping my knuckles against the camera. It sent the app notification of impact (and I forgot to tell my wife I was testing), but it only uploaded the rear camera. MAYBE since the impact was from the rear, that's what it uploaded? But if it had been a situation where I were stopped at a red light, I would want the forward view to confirm that... though it is still recorded on the SD card.