Ambient backscatter: battery-free devices communicate by reflecting RF
uwsensor · Demo · 3 min · 2013 · YouTube title: Ambient Backscatter
Why it's here
Linked as the original demonstration whenever battery-free or energy-harvesting wireless communication comes up.
What it covers
A short University of Washington demo of ambient backscatter, where battery-free devices communicate by reflecting existing wireless signals. It shows devices powered and linked by ambient RF.