from the follow-that-hum dept.
mask.of.sanity writes Forensics and industry experts have cast doubt on an alleged National Security Agency capability to locate whistle blowers appearing in televised interviews based on how the captured background hum of electrical devices affects energy grids. Divining information from electrified wires is a known technique: Network Frequency Analysis (ENF) is used to prove video and audio streams have not been tampered with, but experts weren't sure if the technology could be used to locate individuals.
... when fits of creativity run strong, more than one programmer or writer
has been known to abandon the desktop for the more spacious floor.
-- Fred Brooks