All you need is a video camera, a bag to hide it in....and a lot of nerve! See how this granny fan gets to see right up between their legs as they wander round the local market.

Credit to the man himself:-

http://www.eroprofile.com/m/videos/albums/dariotodo24

Another Granny wanders round the market quite unaware that someone has put a camera bag between her legs. Admire the view!