Metadata Haze is a file meant to evoke the moment of realization at surveillance. From the web site:

"a simple and subtle play with the viewer's eye. First inspection should show just a warm gradient; however, in the periphery one might recognize something moving. Upon that recognition a switch should flip in the viewers mind--like suddenly seeing an ant colony after spotting a single ant-- the entire background should come alive. The connection to metadata is simple and hopefully just as subtle. The data we call metadata is everywhere, pervasive and just out of view. However, upon recognizing a piece of it we are compelled to recognize all of it."

Go there.