disposing of data storage devices Please note that deleting images or formatting memory cards or other data storage devices does not completely erase the original image data. Before discarding a data storage device or transferring ownership to another person, erase all data using commercial deletion software, or format the device and then completely refill it with images containing no private information (for example, pictures of empty sky). –Nikon Digital Camera User’s Manual
(for example, pictures of empty sky) takes Nikon’s recommendation for erasing a camera’s memory card by overwriting it with “for example, pictures of empty sky.” Each book is a unique printed record of both a memory card’s continuous erasure and the impossibility of the sky’s emptiness.