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.
Thus spake the master programmer:
"After three days without programming, life becomes meaningless."
-- Geoffrey James, "The Tao of Programming"