Five years ago I wrote about the concept of “sousveillance,” which was then a budding counterpoint to surveillance. Surveillance, of course, is the practice of the powerful monitoring people under their dominion, especially people who are suspects or prisoners – or today, simply citizens. Sousveillance -- “to watch from below” – has now taken off, fueled by an explosion of miniaturized digital technologies and the far-reaching abuses of the surveillance market/state.
Following my earlier post on corporate espionage of activists, I figured it was an appropriate moment to revisit this topic. As it happens, the fellow who coined the term “sousveillance,” in 1998 -- Steve Mann, a pioneer in “wearable computing” who teaches at the University of Toronto – has recently written two terrific essays on the subject. Both were released at the IEEE [Institute of Electrical and Electronic Engineers] International Symposium on Technology and Society (ISTAS) in June 2013. 
Mann argues that sousveillance is an inevitable trend in technological societies and that, on balance, it “has positive survival characteristics.” Sousveillance occurs when citizens record their encounters with police, for example. This practice exposed the outrageous police brutality against Occupy protesters (blasts of pepper spray in their faces at point-blank range) and helped transform small citizen protests against Wall Street into a global movement.
In the first of his paired essays, Mann writes:
We now live in a society in which we have both “the few watching the many” (surveillance), AND “the many watching the few” (sousveillance). Widespread sousveillance will cause a transition from our one-sided surveillance society back to a situation akin to olden times when the sheriff could see what everyone was doing AND everyone could see what the sheriff was doing. We name this neutral form of watching “veillance” – from the French word “veiller,” which means“to watch.” Veillance is a broad concept that includes both surveillance (oversight) and sousveillance (undersight), as well as databeillance, uberveillance, etc.
It follows that: (1) sousveillance (undersight) is necessary to a healthy, fair and balanced society whenever surveillance (oversight) is already being used; and (2) sousveillance has numerous moral, ethical, socioeconomic, humanistic/humanitarian and practical justifications that will guarantee its widespread adoption, despite opposing sociopolitical forces.
(This passage is from “Veillance and Reciprocal Transparency: Surveillance versus Sousveillance, AR Glass, Lifeglogging and Wearable Computing,” available as a pdf download here. A companion essay, “The Inevitability of the Transition from a Surveillance-Society to a Veillance-Society: Moral and Economic Grounding for Sousveillance,” can be found here.)