Indeed. This reminds me of "Larson Localizers" [1] from Vernor Vinge's "A Deepness in the Sky": "Among the unsuspecting, they are an espionage miracle. Ab

Indeed. This reminds me of "Larson Localizers" [1] from Vernor Vinge's "A Deepness in the Sky": "Among the unsuspecting, they are an espionage miracle. Abused, they lead to ubiquitous law enforcement, and a quick end to civilization." 1: http://en.wikipedia.org/wiki/A_Deepness_in_the_Sky#Localizers http://en.wikipedia.org/wiki/A_Deepness_in_the_Sky#Localizer...