Wireless Access

With the introduction of Martins law i've been asked if there is any way to broadcast an alert to all WiFi users should we need to.

I can't immediately see how this is possible, but wondered if anyone has come across a method ?

thanks

David Coleman gave a talk at WLPC last month on the technology that would support this. It's called Enhanced Broadcast Services (EBCS), as far as I know there aren't any APs / clients that support it today. https://www.youtube.com/watch?v=1BLkLaqZMoQ