Communications of the ACM
Research Archive
The Research archive provides access to all Research articles published in past issues of Communications of the ACM.
February 2020
From Communications of the ACM
Automating Visual Privacy Protection Using a Smart LED
We introduce LiShield, which automatically protects a physical scene against photographing, by illuminating it with smart LEDs flickering in specialized waveforms.
From Communications of the ACM
Technical Perspective: Lighting the Way to Visual Privacy
"Automating Visual Privacy Protection Using a Smart LED," presents a new technique to address the issue of cameras capturing proprietary or private information—it stops most digital cameras from recording a useful image while…