The thing is dial-up was transmitting data via sound. It would be kind of interesting if that ever made a comeback for encryption purposes. Maybe not exactly th

The thing is dial-up was transmitting data via sound. It would be kind of interesting if that ever made a comeback for encryption purposes. Maybe not exactly through wires and modem, but I could see a universe where messages are sent via videos that can only be decoded by certain people that are recording the audio. I don't know why we would do that though. Maybe someone else can riff off this idea.