To get an equivalent to all those meaningless "BIO" certificates? You know that every loudspeaker can be used as a microphone, do you? You know that even stuf

To get an equivalent to all those meaningless "BIO" certificates? You know that every loudspeaker can be used as a microphone, do you? You know that even stuff without radio can be converted to send files wireless (e.g. CPU as radio, already published a while ago by someone)?