Explanation given for why this is not a threat to civil liberties is:
resolution is limited to "one pixel per person"!
resolution is limited to "one pixel per person"!
30x30px is enough to run face detection and recognition.
Can't see how 30x30Mpx would be useful? To see what products they is holding in a basket probably. They would be interested in your pressure cooker probably.
https://www.theguardian.com/world/2013/aug/01/new-york-polic...