I believe he's referring to how, at least on Android, when taking a photo it doesn't save only when the button is pressed. It continuously records starting when the camera is opened and then uses an algo to determine which is the best frame to use.
In this case this is a legitimate problem. There are many apartments where the density of units and/or layout of windows is such that "peering in" is possible. Delivery companies need to adjust their policies to protect privacy.
i understand you’re pointing out that they might just be taking a photo of the package for delivery confirmation. however, the ambiguity is what concerns me. when someone aims a camera at my house, i can’t know for sure what they’re capturing. they could be interested in how i look, what sensitive information is displayed on my computer screens, what i’m watching on tv, what’s inside my house, or even why there’s a large sum of money on the table. last time i checked, i couldn’t tell if they were shooting a photo, a video, in wide-angle, or macro mode, or what the camera was even focusing on. that’s unsettling, and it shouldn’t have to be my concern.