One application Mann explored was a personal safety device for riding a bicycle while being able to see behind... LookingBack refers to a specific performance, Jun 15 1995, with Mann riding 180 miles from Cambridge to Cape Cod with camera on back-of-the-head streaming a low resolution monochrome image to the Internet every few seconds, showing "passed tense", i.e. what was "passed and past".
(NetGuide, June 1995)
    
    more images to be added later...
    from a directory of the same name as first part of above image
    file...
    consists of picture of security guard looking at a picture of me
    on her video screen... 
     Click for medium-resolution greyscale image; a much
     higher resolution version of this same picture, in either 192 bit
     color (double) or 24 bit color (uchar), is available upon request).
     Above picture done in the style of
     "Seamless Hockney", made from 117 pictures
     total.
     This picture is from
     the "ShootingBack" project, funded, in part, by the Council for the Arts at MIT.

``For YOUR
protection, a video record of you and your establishment
is being transmitted and recorded at remote locations.
[insert darkglass here on shirt]
All criminal acts prosecuted.''
.