> you have the device spew out noise with similar characteristics to human speech Surely this only works if you're using the phone as a speakerphone (and are t

> you have the device spew out noise with similar characteristics to human speech Surely this only works if you're using the phone as a speakerphone (and are therefore almost certainly being an arsehole in public[0])? [0] Because if it was an actual speakerphone situation, hiding your voice would be stupid.