Did you read the article? The verbatim text is, in one example, including email addresses and names (and legal boilerplate) directly from asbestoslaw.com.
There are apps to do this using Bluetooth, but no audio iirc. They were used in Hong Kong. I have no sources because I read it on the internet a few years ago, lol
What apps? Some require some compatibility options to be enabled, Waze for example.