If I want to see someone pick their nose, all I have to do is watch people drive stop/go rush hour. Taking a ■■■■ with the dog at 4am is what I’d be worried about someone else seeing.
On a serious note, both Blink as well as yourself can do investigating. You can log into your router and see what devices connected and when. Blink can check out their cloud and see what mobile device created the recordings.