A picture taken secretly or discreetly, often without the subject's knowledge or permission. It involves capturing an image in a way that avoids being noticed, typically to keep the act of photographing hidden. This does not necessarily imply any harmful intent, but rather a desire to be unobtrusive or covert while taking the photo. Such photos can be described as "sneaky snaps or pictures" and are characterised by the photographer's effort to be quiet and respectful and to avoid interruption.