Hardwade wise:

These flock devices can detect different type of noises, like a gun shot, call for help.

Is it recorded or the built in processor automatically detect those calls and store only gun shot sounds (similar to how call for siri work, on iphone.

Can they update these processor to detect different kind of sounds, like count how many farts I generate while I walk the street, and get some environmental tax or something

Duurrr they don’t like surveillance so let’s switch surveillance companies. Problem solved!