Because your friends are likely to take a picture of you and other friends with good angle/exposure etc, and upload them to some network. There is no escaping t

Because your friends are likely to take a picture of you and other friends with good angle/exposure etc, and upload them to some network. There is no escaping that, unlike credit cards. I don’t know if security / street cams actually record anything for more than a day, and I don’t know anyone with home security camera, but friends are always there!