CuriousGeorge113 was the first one to write us about the homemade HERF gun an engineer unveiled at Infowarcon '99. All stuff that you can buy from a hardware store, and disable computers at varying range, depending on size. The current model does not do permanent damage, unlike EMP.
... 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