“…Studies of location-based imaging, have typically employed purpose-built equipment that allows the user to tag an image with both its location and some additional categorization, for example, by selecting labels from a menu (Davis et al, 2005; Risto-Sarvas, Herrarte, Wilhelm, Takhteyev, Sarvas, van House, & Davis, 2004), although recent developments in mobile telephone devices mean that it might be possible to do much of this work using a product such as the HTC G1 phone (with GPS, compass, digital camera). The work by Davis and his colleagues previously mentioned was concerned with how semantic tags can be used to translate the "context" of capture (defined by location, time, and presence of other Bluetooth-enabled devices, which is used to indicate the presence of device owners when the image was captured) to define the "content" of the image.…”