No idea at all. Make a submission and see what happens?do you know if a school wanted to test it if they would or not? I couldn't find anything recent for contact details other than submitting a request in.
A bit like dendrochronology. Like using tree rings to determine an historical time period, you can now use the a record of the variation of the mains frequency detectable in audio or video recordings, to determine the date/time the recording was made.As well as being freaked out, I don't quite 'get it'.