The black helecopter conspiracy theorist in me whispers: As a mass surveillance strategy it makes much more sense to have a national tap on all the free wifi than to require passwords&#x2F;id, which would send potential terrorists underground with something harder to tap. The threat of an effective security culture of &quot;undesirable&quot; cells around, say, one-time pads, is the end-game that any state security apparatus is trying to avoid.