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mk  ·  3056 days ago  ·  link  ·    ·  parent  ·  post: Beware of ads that use inaudible sound to link your phone, TV, tablet, and PC

It sounded unbelievable to me, but I did recall reading about it before. I don't remember where, but some Googling brought up this paper:

On Covert Acoustical Mesh Networks in Air

Just because you're paranoid, don't mean they're not after you?

Also, cheers.