@Solla-topee sure, I'll upload all these things you require.

Video link: https://drive.google.com/file/d/1lew_5-ONHuBjeDAL_DvEy_UYRmPbJqrH/view?usp=drivesdk

  @Solla-topee hey, after a few days of testing your recommendations, I'm still getting false positives, even when setting the sensitivity to just 1. I think in my case the solution would be that Tapo enables the ability to set a detection zone for person detection.

Hi @Pauliver and @Solla-topee, I have arrived to this topic in lieu of the same experience.

I also don't agree motion tracking is a plausible solution, at least not one that I can make 'workable'.

Reliable line-crossing capability is likely within the app, albeit the app requires a little expanding. That is, it would be great for me as the user to have the option of Line Crossing AND (Person Detected OR Pet Detected) for a 'line-crossing notification', not just line crossing on it's own. One potential method to achieve this could be by adding an option into the Line-Crossing Detection settings, such as:

Additional detection:

1. Person Detected (toggle on or off)
2. Pet Detected (toggle on or off)

so that Line Crossing Detection triggers based on any one or more of the additional AI based triggers the user selects. If the additional options are all off, the app then works just as it does now.

Currently, I am attempting this in a non-elegant way, using two old Kasa HS100 switches:

1. When a Person Detected or Animal Detected one HS100 switch is turned on for 30 seconds (because people walking is typically seen before line-crossing)
2. When line-crossing is detected the other HS100 is turned on for 10 seconds.
3. I use Home Assistant to provide me the "line-crossing notification' when both HS100 switches are ON, motion tracking then also turned on to follow the person to my front door. 

I am waiting for more data before knowing if this setup works reliably, but hoping TAPO can embed combined Line-crossing with Person / Animal detection as part of its functionality.

I am also experiencing this with car headlights at night.

Also for me, this is an issue with car headlights at night casting shadows and also for when the line crosses a reflective window (car parked in driveway) and the reflection moves across the line.

.