It’s really clever.

The idea is that cameras read/write to a disk. That cause electromagnetic radiation that is detectable.

Then this drone does [something/move/stimulus] to trigger more read/write/EM radiation.

But part of me can’t believe this is the cutting edge in 2026? Feels like 60s engineers would’ve thought about this

Intelligence services are very likely far ahead and for obvious reasons the public is not privy to it.