Preventing Nonconsensual Surveillance By Others

Karl gmkarl at
Thu Jun 11 07:15:25 PDT 2020

Here's the article that cites it from 2016, on designing a mobile personal
device to defend against video surveillance.

Detection and Depletion of Digital Cameras: An Exploration into Protecting
Personal Privacy in the Modern World

As all forms of technology become more integrated into our daily lives,
personal privacy has become a major concern. Everyday devices, such as
mobile phones, have surveillance capabilities simply by having a digital
camera as part of the device. And while privacy and secrecy seem to go hand
in hand, it is not always the case that one does not care about privacy
because they have nothing to hide. For example, everything from
unflattering photographs to being unknowingly and perhaps criminally
surveilled, are ample reasons to desire some means of combatting the not so
candid presence of digital cameras in everyday life. There is also the more
casual argument of having control over one's public image. For these
reasons, we propose a wearable device that offers personal privacy
protection. This device should be able to detect for cameras in an area,
and then disrupt the photographer's ability to capture their photo. In this
project, we explored the implications of creating such a device, and
evaluate which approaches to detection and disruption would be possible for
such a device.

On Thu, Jun 11, 2020, 9:39 AM Karl <gmkarl at> wrote:

> This is a public article from 2011 on electrojamming surveillance
> cameras.  I've heard people are doing this in the streets now.
> Digital camera sensing and its image disruption with controlled
> radio-frequency reception/transmission
> Photography is becoming more and more end user capability, with many
> people having digital cameras on their mobile phones. In general digital
> cameras are phasing out traditional film based equipment. The advantages of
> digital photography include the compactness of the cameras, high
> reliability and ease of image processing and transmission of the images via
> the internet or multimedia messaging (MMS) enabling the photographer to
> send his images within seconds. These processes emphasize a big problem:
> the ability to photograph an object without the approval of its owner. This
> unsolved problem has many aspects: the right to privacy, paparazzi,
> industrial intelligence and the protection of objects having high security
> sensitivity. This paper describes test methodology and test results to
> sense and then to disrupt digital imaging camera by using a controlled
> Radio Frequency (RF) transmission. This method can be used in order to
> create a system for causing a localized malfunctioning of a digital camera
> in a specified area to degrade photographic recording done by the digital
> camera, comprising the steps of coupling the digital camera to a source of
> electromagnetic interference and generating electromagnetic waves in a
> specific frequency to interfere with the correct functioning of at least
> one electronic component of the digital camera.
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