"SenseCam takes pictures at VGA resolution (640x480 pixels) and stores them as compressed .jpg files on internal flash memory. We currently fit 1Gb of flash memory, which can typically store over 30,000 images. Most users seem happy with the relatively low-resolution images, suggesting that the time-lapse, first-person-viewpoint sequences represent a useful media type that exists somewhere between still images and video. It also points to the fact that these are used as memory supports rather than rich media. Along with the images, SenseCam also stores a log file, which records other sensor data along with their timestamps. Additional user data, such as time-stamped GPS traces, may be used in conjunction with the SenseCam data via time-correlation." - Kurt Starnes