You drove through a red light but nobody saw you do it. There were no police present but your traffic ticket came in the mail with a crystal clear photo. You never saw the camera but it saw your license plate. Pay the fine as there will be no way to argue successfully.
Again last night an animal got into your household trash can and spread garbage all over area. Your wildlife, motion-detecting camera showed a clear photo the next morning. A rascal raccoon did it. The raccoon wore a mask but that didn’t hide the truth.
Your bank lobby is equipped to take videos and still photos of every person who comes through the door. They have a sign posted on the entrance instructing customers not to wear sunglasses or sweatshirts with hoods.
Increasingly, facial recognition cameras are in use to limit entrance to buildings to only those authorized to enter. Video cameras are rolling in parking lots, back alleys and convenience stores.
Additionally, there are photos and videos being taken on cell phones; often the audio track is captured with the video. Just ask a politician caught on a camera without knowing they were and then seeing themselves on television or social media.
Be sure and smile as you are more and more likely to be on camera when you least expect it.