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Hardware Hacking

Revisiting DIY HERF Guns 425

An anonymous reader writes "HERF guns have previously been regarded as nothing more than an interesting project with uses ranging from at-home experiments to malicious pranks. But the deployment of 'morally gray' forms of high-tech crowd control, such as the recent use of a sound cannon against domestic protesters, along with the likely future unleashing of the pain gun on more than just 'foreign terrorists,' creates a new purpose for these relatively easily assembled devices. Could HERF guns become a new method to counter the silencing of protesters via these sophisticated attacks, or is there any other way to prevent such efficient, convenient crowd dispersal?"

Long computations which yield zero are probably all for naught.