There's nothing new about the technology, but a new extremely short range radio signal is broadcasting to people in their cars waiting to get a COVID vaccine shot in Regina. The "station" gives instructions about what to expect and other information about the virus. 

An interesting idea, designed to answer questions about the jab and what happens after you get it, aimed at a captive audience. I wonder if anyone here will pick up the idea. 

This radio channel is broadcasting information about vaccines