It reminded me of Dan Brown’s book, “Angels and Demons”, where they were on a hunt for the hidden “anti-matter particle” container. If the server broadcasting the image was on the internet, they could have flipped airconditioning ( in addition to lights) across the city to detect “clock skew” and narrow down to which part of the city it could have been.
com/blog/archives/20 11/04/pinpointing_a_ c.html
com/blog/archives/20 05/03/remote_physica l.html
/publications/papers /2005/fingerprinting /KohnoBroidoClaffy05 -devicefingerprintin g.pdf
gosum.org/2010/HES20 10-rlifchitz-Fingerp rinting-hardware-dev ice-using-clock-skew ing.pdf
If you have more interesting papers/links/tools to share please let me a comment