Upskirting or upskirt photography is the practice of taking photographs under a person's skirt or kilt, capturing an image of the crotch area, underwear, and sometimes genitalia. An "upskirt" is a photograph, video, or illustration which incorporates such an image, although the term may also be used to refer to the area of the body inside a skirt, usually from below and while being worn.
An upskirt photograph
Professional tennis player Yaroslava Shvedova wearing safety shorts at a New York tennis match
Detail from Fragonard's The Swing (1767)
Japanese-American figure skater Rena Inoue wearing a mini-skirt
Secret photography is the use of an image or video recording device to photograph or film a person who is unaware that they are being intentionally photographed or filmed. It is sometimes called covert photography.
A still from a covertly taken video by RAWA showing Taliban members beating a woman in public
The British Army in North-west Europe 1944–45 (image taken covertly)