https://pmc.ncbi.nlm.nih.gov/articles/PMC9304164/ > Electric network frequency i...

		tantalor 22 days ago \| parent \| context \| favorite \| on: Hiding secret codes in light protects against fake... https://pmc.ncbi.nlm.nih.gov/articles/PMC9304164/ > Electric network frequency is a signal unique over time and thus can be used in time estimation for videos.