olemus
väga väikese energiatarbega seade, mis toitub signaali kandvate elektromagnetlainete energiast
= a device with very low energy consumption that feeds on the energy of electromagnetic waves carrying the signal

ülevaateid
https://cacm.acm.org/research/the-internet-of-batteryless-things/

näiteid
https://pmc.ncbi.nlm.nih.gov/articles/PMC10724104/
https://aces-society.org/includes/downloadpaper.php?of=ACES_Journal_October_2018_Paper_12&nf=18-10-12

vt ka
- energiapüük
- Ethernet-toide