The Lens-Less Camera by Akihiko Taniguchi is a simple web app for the iPhone designed to ‘take’ a picture without using the built in camera. The following text is from the artists site in Japanese and translated by an online translator:
Gets the current position by GPS that is built into the iPhone, and remove the photo from google streetview of the surroundings. Do not use the camera, (roughly) you take a picture of where you are. The streetview is an error if there is no data or was close to the countryside.
The work, called a study by the artist, is reminiscent of Buttons by Sascha Pohflepp. While Buttons however is a custom built device in the shape of a compact camera with the lens noticeably missing, the Lens-Less Camera considers a device already in the pockets of many users and how that can become a means of seeing the current location in a different time.